The partition type (or partition ID) in a partition's entry in the partition table inside a master boot record (MBR) is a byte value intended to specify the file system the partition contains or to flag special access methods used to access these partitions (e.g. special CHS mappings, LBA access, logical mapped geometries, special driver access, hidden partitions, secured or encrypted file systems, etc.).
Lists of assigned partition types to be used in the partition table in the MBR were originally maintained by IBM and Microsoft internally. When the market of PC operating systems and disk tools grew and liberated, other vendors had a need to assign special partition types to their products as well. As Microsoft neither documented all partition types already assigned by them nor wanted to maintain foreign assignments, third parties started to simply assign partition types on their own behalf in a mostly uncoordinated trial-and-error manner. This led to various conflicting assignments sometimes causing severe compatibility problems between certain products. [1]
Several industry experts including Hale Landis, Ralf D. Brown, Matthias R. Paul, and Andries E. Brouwer in the 1990s started to research partition types and published (and later synchronized) partition type lists in order to help document the industry de facto standard and thereby reduce the risk of further conflicts. Some of them also actively helped to maintain software dealing with partitions to work with the updated lists, indicated conflicts, devised additional detection methods and work-arounds for vendors, or engaged in coordinating new non-conflictive partition type assignments as well.
It is up to an operating system's boot loader or kernel how to interpret the value. So the table specifies which operating systems or disk-related products introduced an ID and what file system or special partition type they mapped it to. Partitions with partition types unknown to the software should be treated as reserved but occupied disk storage space which should not be dealt with by the software, save for partition managers.
While the list is not officially maintained, [1] new assignments should be coordinated.
In particular temporary partition type assignments for local or experimental projects can utilize type
7Fh
in order to avoid conflicts with already assigned types. This type was specially reserved for individual use as part of the Alternative OS Development Partition Standard (AODPS) initiative since 2002.
[2]
This is a list of known master boot record partition types on IBM PC compatible computers:
Partition ID | Occurrence | Access | Bootable | Type | Origin | Supported by | Description |
---|---|---|---|---|---|---|---|
00h |
MBR, EBR | — | No | Free | IBM | All | Empty partition entry |
01h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | File system | IBM | DOS 2.0+ |
FAT12 as primary partition in first physical 32
MB of disk or as logical drive anywhere on disk (else use
06h instead)
[3]
[4]
[5]
|
02h |
MBR | CHS | x86, 68000, Z8000, PDP-11 | File system | Microsoft, SCO | XENIX | XENIX root (see
03h and
FFh )
[3]
|
03h |
MBR | CHS | No | File system | Microsoft, SCO | XENIX | XENIX usr (see
02h and
FFh )
[3]
|
04h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | File system | Microsoft | DOS 3.0+ |
FAT16 with less than 65,536 sectors (32
MB). As primary partition it must reside in first physical 32
MB of disk, or as logical drive anywhere on disk (else use
06h instead).
[3]
[4]
[5]
|
05h |
MBR, EBR | CHS, (LBA) | No, AAP | Container | IBM | Some versions of DOS 3.2, DOS 3.3+ |
Extended partition with
CHS addressing. It must reside within the first physical 8
GB of disk, else use
0Fh instead (see
0Fh ,
85h ,
C5h ,
D5h )
[3]
[4]
[5]
|
06h |
MBR, EBR | CHS, LBA | x86 | File system | Compaq | DOS 3.31+ |
FAT16B with 65,536 or more sectors. It must reside within the first 8
GB of disk unless used for logical drives in an
0Fh extended partition (else use
0Eh instead). Also used for FAT12 and FAT16 volumes in primary partitions if they are not residing in first physical 32
MB of disk.
[nb 1]
[3]
[4]
[5]
|
07h |
MBR, EBR | CHS, LBA | x86 | File system | Microsoft, IBM | OS/2 1.2+ | IFS |
MBR, EBR | CHS, LBA | 286 | File system | IBM | OS/2 1.2+, Windows NT | HPFS [3] | |
MBR, EBR | CHS, LBA | 386 | File system | Microsoft | Windows NT | NTFS [4] [5] | |
MBR, EBR | CHS, LBA | Yes | File system | Microsoft | Windows Embedded CE | exFAT | |
File system | Quantum Software Systems | QNX 2 | QNX "qnx" (7) (pre-1988 only) [6] [nb 2] | ||||
08h |
MBR | CHS | x86 | File system | Commodore | Commodore MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] |
CHS | x86 | File system | IBM | OS/2 1.0-1.3 | OS/2 (FAT?) | ||
File system | IBM | AIX | AIX boot/split | ||||
File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qny" (8) [6] [nb 2] | ||||
Container | Dell | Partition spanning multiple drives | |||||
09h |
File system | IBM | AIX | AIX data/boot | |||
File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qnz" (9) [6] [nb 2] | ||||
MBR | CHS | 286 | File system | Mark Williams Company | Coherent | Coherent file system | |
MBR | File system | Microware | OS-9 | OS-9 RBF | |||
0Ah |
Service | PowerQuest, IBM | OS/2 | OS/2 Boot Manager [nb 4] | |||
Swap | Mark Williams Company | Coherent | Coherent swap partition | ||||
0Bh |
MBR, EBR | CHS, LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with CHS addressing [4] [5] |
0Ch |
MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with LBA [4] [5] |
0Eh |
MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.0+ | FAT16B with LBA [4] [5] |
0Fh |
MBR, EBR | LBA | No, AAP | Container | Microsoft | DOS 7.0+ |
Extended partition with LBA (see
05h and
CFh )
[4]
[5]
|
11h |
MBR | CHS | x86 | File system | Leading Edge | Leading Edge MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT12 (corresponds with
01h )
[nb 4]
| ||||
12h |
MBR | CHS, LBA | x86 | Service FS | Compaq | Configuration partition (bootable FAT with MS-DOS [4] [5] [7]); Recovery partition (bootable FAT32 with Windows setup [8]) | |
MBR | x86 | Service | Gang of Nine | EISA machines | EISA configuration utility for the system [4] [5] | ||
Hibernation | Compaq | Compaq Contura | Hibernation partition [7] | ||||
MBR | x86 | Service FS | NCR | Diagnostics and firmware partition (bootable FAT) [7] | |||
MBR | x86 | Service FS | Intel | Service partition (bootable
FAT)
[7] (see
98h )
| |||
Service FS | IBM | Rescue and Recovery partition [7] | |||||
14h |
File system | AST | AST MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] (see AST MBR) | |||
x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 (corresponds with
04h )
[nb 4]
| |||
LBA | x86 | File system | Lasse Krogh Thygesen | Maverick OS | Omega file system [9] | ||
15h |
No, AAP | Hidden container | IBM | OS/2 Boot Manager | Hidden
extended partition with
CHS addressing (corresponds with
05h )
[nb 4]
| ||
LBA | No | Swap | Lasse Krogh Thygesen | Maverick OS | Swap [9] | ||
16h |
x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16B (corresponds with
06h )
[nb 4]
| ||
17h |
Hidden FS | IBM | OS/2 Boot Manager | Hidden
IFS (corresponds with
07h )
[nb 4]
| |||
Hidden
HPFS (corresponds with
07h )
[nb 4]
| |||||||
Hidden
NTFS (corresponds with
07h )
[nb 4]
| |||||||
Hidden
exFAT (corresponds with
07h )
[nb 4]
| |||||||
18h |
No | Hibernation | AST | AST Windows | AST Zero Volt Suspend or SmartSleep partition | ||
19h |
Willow Schlanger | Willowtech Photon coS | Willowtech Photon coS (see
20h )
| ||||
1Bh |
Hidden FS | IBM | OS/2 Boot Manager | Hidden
FAT32 (corresponds with
0Bh )
[nb 4]
| |||
1Ch |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 with LBA (corresponds with
0Ch )
[nb 4]
| |||
Service FS | ASUS | ASUS eRecovery | ASUS recovery partition (Hidden FAT32 with LBA, see
0Ch )
[10]
| ||||
1Eh |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 with LBA (corresponds with
0Eh )
[nb 4]
| |||
1Fh |
MBR, EBR | LBA | Hidden container | IBM | OS/2 Boot Manager | Hidden
extended partition with
LBA addressing (corresponds with
0Fh )
[nb 4]
| |
20h |
? | File system | Microsoft | Windows Mobile | Windows Mobile update XIP | ||
File system | Willow Schlanger | Willowsoft Overture File System (OFS1) (see
19h )
| |||||
21h |
MBR | ? | Hewlett-Packard | HP Volume Expansion | [nb 5] | ||
File system | Dave Poirier | Oxygen | FSo2 (Oxygen File System) (see
22h )
| ||||
22h |
Container | Dave Poirier | Oxygen | Oxygen Extended Partition Table (see
21h )
| |||
23h
|
Yes | File system | Microsoft | Windows Mobile | Windows Mobile boot XIP | ||
24h |
MBR | CHS | x86 | File system | NEC | NEC MS-DOS 3.30 | Logical sectored FAT12 or FAT16 [11] [nb 3] (see NEC MBR) |
27h |
Service FS | Microsoft | Windows |
Windows Recovery Environment (RE) partition (hidden
NTFS partition type
07h )
[12]
| |||
MBR | LBA | Yes | Service FS | Acer | D2D eRecovery | Rescue partition (Hidden NTFS labeled "PQService", corresponds to
07h )
| |
Yes | Service | MikroTik | Linux (RouterBOARD 500) | RooterBOOT kernel partition (contains a raw ELF Linux kernel, no file system) | |||
2Ah |
File system | Kurt Skauen | AtheOS |
AtheOS file system (AthFS, AFS) (an extension of BFS, see
2Bh and
EBh )
| |||
MBR, EBR | LBA | x86 | File system | Reserved (see
CAh )
| |||
2Bh |
File system | Kristian van der Vliet | SyllableOS | SyllableSecure (SylStor), a variant of
AthFS (an extension of BFS, see
2Ah and
EBh )
| |||
30h |
MBR | CHS | x86 | File system | Digital Research | Personal CP/M-86 | Found in some OEM
Siemens systems instead of
DBh .
[13] Filesystem parameters are in the following sector (LBA 1), not the partition itself.
|
31h |
Microsoft, IBM | Reserved | |||||
33h |
Microsoft, IBM | Reserved | |||||
34h |
Microsoft, IBM | Reserved | |||||
35h |
MBR, EBR | CHS, LBA | No | File system | IBM | OS/2 Warp Server / eComStation | JFS (OS/2 implementation of AIX Journaling File system) |
36h |
Microsoft, IBM | Reserved | |||||
38h |
File system | Timothy Williams | THEOS | THEOS version 3.2, 2 GB partition | |||
39h |
Container | Bell Labs | Plan 9 | Plan 9 edition 3 partition (sub-partitions described in second sector of partition) | |||
File system | Timothy Williams | THEOS | THEOS version 4 spanned partition | ||||
3Ah |
File system | Timothy Williams | THEOS | THEOS version 4, 4 GB partition | |||
3Bh |
Container | Timothy Williams | THEOS | THEOS version 4 extended partition | |||
3Ch |
Service | PowerQuest | PartitionMagic | PqRP (PartitionMagic or DriveImage in progress) [14] | |||
3Dh |
Hidden FS | PowerQuest | PartitionMagic | Hidden NetWare | |||
40h |
PICK Systems | PICK | PICK R83 | ||||
VenturCom | Venix | Venix 80286 | |||||
41h |
Yes | Personal RISC | Personal RISC Boot | ||||
Linux | Linux | Old Linux/
Minix (disk shared with DR DOS 6.0) (corresponds with
81h )
| |||||
PowerPC | PowerPC | PowerPC | PPC PReP (Power PC Reference Platform) Boot | ||||
42h |
Secured FS | Peter Gutmann | SFS | Secure File system (SFS) | |||
No | Linux | Linux | Old Linux swap (disk shared with DR DOS 6.0) (corresponds with
82h )
| ||||
Container | Microsoft | Windows 2000, XP, etc. | Dynamic extended partition marker [4] [5] | ||||
43h |
Yes | File system | Linux | Linux | Old Linux native (disk shared with DR DOS 6.0) (corresponds with
83h )
| ||
44h |
Wildfile | GoBack | Norton GoBack, WildFile GoBack, Adaptec GoBack, Roxio GoBack | ||||
45h |
CHS | Priam | Priam (see also
5Ch )
| ||||
MBR | CHS | Yes | Boot-US | Boot-US boot manager (1 cylinder) | |||
Jochen Liedtke, GMD | EUMEL/ ELAN | EUMEL/ELAN (L2) | |||||
46h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2) | ||||
47h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2) | ||||
48h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2), ERGOS L3 | ||||
4Ah |
MBR | Yes | Nick Roberts | AdaOS | Aquila (see
7Fh )
| ||
MBR, EBR | CHS, LBA | No | File system | Mark Aitchison | ALFS/THIN | ALFS/THIN advanced lightweight file system for DOS | |
4Ch |
ETH Zürich | ETH Oberon | Aos (A2) file system (76) | ||||
4Dh |
Quantum Software Systems | QNX 4.x, Neutrino | Primary QNX POSIX volume on disk (77) [6] [nb 2] | ||||
4Eh |
Quantum Software Systems | QNX 4.x, Neutrino | Secondary QNX POSIX volume on disk (78) [6] [nb 2] | ||||
4Fh |
Quantum Software Systems | QNX 4.x, Neutrino | Tertiary QNX POSIX volume on disk (79) [6] [nb 2] | ||||
Yes | ETH Zürich | ETH Oberon | Boot / native file system (79) | ||||
50h |
ETH Zürich | ETH Oberon | Alternative native file system (80) | ||||
No | Ontrack | Disk Manager 4 | Read-only partition (old) | ||||
LynxOS | Lynx RTOS | ||||||
Novell | |||||||
51h |
Novell | ||||||
No | Ontrack | Disk Manager 4-6 | Read-write partition (Aux 1) | ||||
52h |
MBR | CHS | File system | Digital Research | CP/M-80 | CP/M-80 | |
Microport | System V/AT, V/386 | ||||||
53h |
Ontrack | Disk Manager 6 | Auxiliary 3 (WO) | ||||
54h |
Ontrack | Disk Manager 6 | Dynamic Drive Overlay (DDO) | ||||
55h |
MicroHouse / StorageSoft | EZ-Drive | EZ-Drive, Maxtor, MaxBlast, or DriveGuide INT 13h redirector volume | ||||
56h |
AT&T | AT&T MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] | ||||
MicroHouse / StorageSoft | EZ-Drive | Disk Manager partition converted to EZ-BIOS | |||||
Golden Bow | VFeature | VFeature partitioned volume | |||||
57h |
MicroHouse / StorageSoft | DrivePro | |||||
Novell | VNDI partition | ||||||
59h |
MBR, EBR | CHS, LBA | Yes | File system | Yocto | yocOS | yocFS |
5Ch |
CHS | Container | Priam | EDISK | Priam EDisk Partitioned Volume (see also
45h )
| ||
61h |
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT12 (corresponds to
E1h )
[nb 6]
| |
63h |
CHS | File system | AT&T | SCO Unix, ISC, UnixWare, AT&T System V/386, ix, MtXinu BSD 4.3 on Mach | |||
CHS | Yes | File system | Mach and BSD [15] [16] | GNU/Hurd | Old
GNU/Hurd with UFS
[15] support (corresponds with
83h )
| ||
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT12 (corresponds to
E3h )
[nb 6]
| ||
64h |
? | Storage Dimensions | SpeedStor | Hidden FAT16 (corresponds to
E4h )
[nb 6]
| |||
File system | Novell | NetWare | NetWare File System 286/2 [3] | ||||
Secured FS | Solomon | PC-ARMOUR | |||||
65h |
File system | Novell | NetWare | NetWare File System 386 | |||
66h |
? | Novell | NetWare | Storage Management Services (SMS) | |||
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT16 (corresponds to
E6h )
[nb 6]
| ||
67h |
? | Novell | NetWare | Wolf Mountain cluster | |||
68h |
? | Novell | NetWare | ||||
69h |
? | Novell | NetWare 5 | ||||
? | Novell | NetWare | Novell Storage Services (NSS) | ||||
6Ch |
MBR | CHS, LBA | x86 | Container | DragonFly BSD | BSD | BSD slice (DragonFly BSD) [17] |
70h |
Service | DiskSecure | DiskSecure multiboot | ||||
71h |
Microsoft, IBM | Reserved | |||||
72h |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT12 (CHS, SFN) (corresponds with
01h )
| |
File system | Nordier | Unix V7/x86 | V7/x86 | ||||
73h |
Microsoft, IBM | Reserved | |||||
74h |
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT16B (corresponds to
F4h )
[nb 6]
| |
75h |
File system | IBM | PC/IX | [3] | |||
76h |
Storage Dimensions | SpeedStor | Hidden read-only FAT16B (corresponds to
F6h )
[nb 6]
| ||||
77h |
File system | Novell | VNDI, M2FS, M2CS | ||||
78h |
Yes | File system | Geurt Vos | XOSL bootloader file system | |||
79h |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 (CHS, SFN) (corresponds with
04h )
| |
7Ah |
MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 (LBA, SFN) (corresponds with
0Eh )
| |
7Bh |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16B (CHS, SFN) (corresponds with
06h )
| |
7Ch |
MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (LBA, SFN) (corresponds with
0Ch )
| |
7Dh |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (CHS, SFN) (corresponds with
0Bh )
| |
7Eh |
MBR, EBR | No | Cache | Romex Software | PrimoCache | Level 2 cache | |
7Fh |
MBR, EBR | Alternative OS Development Partition Standard | Reserved for individual or local use and temporary or experimental projects [2] | ||||
80h |
File system | Andrew Tanenbaum | Minix 1.1-1.4a | MINIX file system (old) | |||
81h |
File system | Andrew Tanenbaum | Minix 1.4b+ | MINIX file system (corresponds with
41h )
| |||
82h |
No | Swap | Linux | Linux |
Linux swap space (corresponds with
42h )
| ||
No | Swap | Linux | GNU/Hurd | GNU/Hurd ( Hurd uses the same Linux swap file system) | |||
x86 | Container | Sun Microsystems |
Solaris x86 (for Sun disklabels up to 2005) (see
BFh )
| ||||
83h |
Yes | File system | Linux | Linux | Any native
Linux file system (see
93h , corresponds with
43h )
| ||
Yes | File system | Linux | GNU/Hurd |
GNU/Hurd (
Hurd and
GRUB use the same Linux ext2 file system to run and it no longer supports UFS
[15] file system, corresponds with
63h )
| |||
84h |
No | Hibernation | Microsoft | ? | APM hibernation (suspend to disk, S2D) [5] [7] [18] | ||
Hidden FS | IBM | OS/2 | Hidden C: (FAT16)(corresponds to either 04h or 06h) | ||||
Hibernation | Intel | Rapid Start technology | Rapid Start hibernation data [19] (possibly iFFS; possibly used for Intel SRT SSD cache as well) | ||||
85h |
No, AAP | Container | Linux | Linux | Linux
extended
[20] (corresponds with
05h )
| ||
86h |
File system | Microsoft | Windows NT 4 Server |
Fault-tolerant FAT16B mirrored volume set (see
B6h and
C6h , corresponds with
06h )
[4]
[5]
| |||
Service | Linux | Linux | Linux
RAID superblock with auto-detect (old) (see
FDh )[
citation needed]
| ||||
87h |
File system | Microsoft | Windows NT 4 Server | Fault-tolerant
HPFS/
NTFS mirrored volume set (see
B7h and
C7h , corresponds with
07h )
[4]
[5]
| |||
88h |
Service | Linux | Linux | Linux plaintext partition table | |||
8Ah |
Service | Martin Kiewitz | AirBoot | AirBoot is a track0 Boot Manager with on-the-fly partition detection [21] | |||
8Bh |
File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant
FAT32 mirrored volume set (see
BBh and
CBh , corresponds with
0Bh )
[4]
| |||
8Ch |
File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set (see
BCh and
CCh , corresponds with
0Ch )
[4]
| |||
8Dh |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT12 (corresponds with
01h )
[nb 7]
|
8Eh |
Container | Linux | Linux |
Linux LVM since 1999 (see
FEh )[
citation needed]
| |||
90h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with
04h )
[nb 7]
|
91h |
MBR, EBR | CHS, LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden
extended partition with
CHS addressing (corresponds with
05h )
[nb 7]
|
92h |
MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16B (corresponds with
06h )
[nb 7]
|
93h |
File system | Andrew S. Tanenbaum | Amoeba | Amoeba native file system | |||
Hidden FS | Linux | Hidden Linux file system (see
83h )
| |||||
94h |
Service | Andrew S. Tanenbaum | Amoeba | Amoeba bad block table | |||
95h |
File system | MIT | EXOPC | EXOPC native | |||
96h |
File system | ? | CHRP | ISO-9660 file system [22] | |||
97h |
MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden
FAT32 (corresponds with
0Bh )
[nb 7]
|
98h |
MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden
FAT32 (corresponds with
0Ch )
[nb 7]
|
MBR | CHS, LBA | x86 | Service FS | Datalight | ROM-DOS | Service partition (bootable
FAT) ROM-DOS SuperBoot (see
12h )
| |
MBR | CHS, LBA | x86 | Service FS | Intel | ? | Service partition (bootable
FAT)
[7] (see
12h )
| |
99h |
File system | ? | ? | Early Unix[ citation needed] | |||
9Ah |
MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with
0Eh )
[nb 7]
|
9Bh |
MBR, EBR | LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden
extended partition with
LBA (corresponds with
0Fh )
[nb 7]
|
9Eh |
File system | Andy Valencia | VSTa | [ citation needed] | |||
File system | Andy Valencia | ForthOS | ForthOS (eForth port) [23] | ||||
9Fh |
? | ? | BSD/OS 3.0+, BSDI | (see
B7h and
B8h )
| |||
A0h |
MBR | Service FS | Hewlett-Packard | ? | Diagnostic partition for HP laptops [7] | ||
Hibernation | Phoenix, IBM, Toshiba, Sony | ? | Hibernate partition [5] | ||||
A1h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
Hibernation | Phoenix, NEC | ? | Hibernate partition | ||||
A2h |
MBR | CHS, LBA | ARM | Image | Altera | Cyclone V | Hard Processor System (HPS) ARM preloader [24] |
A3h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
A4h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
A5h |
MBR | Container | FreeBSD | BSD | BSD slice (BSD/386, 386BSD, NetBSD (before 1998-02-19), FreeBSD) [25] | ||
A6h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
MBR | Container | OpenBSD | OpenBSD | OpenBSD slice | |||
A7h |
386 | File system | NeXT | NeXTSTEP | [ citation needed] | ||
A8h |
File system | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X UFS [nb 8] | |||
A9h |
MBR | Container | NetBSD | NetBSD | NetBSD slice [26] | ||
AAh |
MBR | CHS | ? | File system | Olivetti | MS-DOS | Olivetti MS-DOS FAT12 (1.44 MB) (corresponds with
06h )
|
ABh |
Yes | Service | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X boot [nb 8] | ||
File system | Stanislav Karchebny | GO! OS | GO! | ||||
ACh |
Yes | Service | Apple | Darwin, Mac OS X | Apple RAID, Mac OS X RAID [nb 8] | ||
ADh |
File system | Ben Avison, Acorn | RISC OS | ADFS / FileCore format | |||
AEh |
x86 | File system | Frank Barrus | ShagOS | ShagOS file system | ||
AFh |
? | File system | Apple | Mac OS X | HFS and HFS+ [nb 8] | ||
No | Swap | Frank Barrus | ShagOS | ShagOS swap | |||
B0h |
MBR | CHS, LBA | x86 | Blocker | Star-Tools | Boot-Star | Boot-Star dummy partition |
B1h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | ||||
B2h |
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | |||
B3h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | ||||
B4h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
B6h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored master volume (see
C6h and
86h , corresponds with
06h )
| |||
B7h |
File system | BSDI (before 3.0) | BSDI native file system / swap (see
B8h and
9Fh )
| ||||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
HPFS/
NTFS mirrored master volume (see
C7h and
87h , corresponds with
07h )
| |||
B8h |
File system | BSDI (before 3.0) | BSDI swap / native file system (see
B7h and
9Fh )
| ||||
BBh |
Hidden FS | PhysTechSoft, Acronis, SWsoft | BootWizard, OS Selector | PTS BootWizard 4 / OS Selector 5 for hidden partitions other than
01h ,
04h ,
06h ,
07h ,
0Bh ,
0Ch ,
0Eh and unformatted partitions
| |||
MBR | Service FS | Acronis | Acronis True Image | OEM Secure Zone (corresponds to
BCh )
| |||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored master volume (see
CBh and
8Bh , corresponds with
0Bh )
| |||
BCh |
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored master volume (see
CCh and
8Ch , corresponds with
0Ch )
| ||
MBR | LBA | Service FS | Acronis | Acronis True Image | Acronis Secure Zone | ||
MBR, EBR | Service FS | Paragon Software Group | Backup Capsule | Backup Capsule[ citation needed] | |||
BDh |
File system | ? | BonnyDOS/286 | [ citation needed] | |||
BEh |
Yes | File system | Sun Microsystems | Solaris 8 | Solaris 8 boot | ||
BFh |
x86 | Container | Sun Microsystems | Solaris | Solaris x86 (for Sun disklabels, since 2005) (see
82h )
| ||
C0h |
MBR | CHS, LBA | x86 | Secured container | Novell, IMS | DR-DOS, Multiuser DOS, REAL/32 | Secured FAT partition (smaller than 32 MB) [nb 9] [nb 10] |
C1h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured
FAT12 (corresponds with
01h )
[nb 9]
|
C2h |
Yes | Hidden FS | BlueSky Innovations | Power Boot | Hidden Linux native file system | ||
C3h |
No | Hidden swap | BlueSky Innovations | Power Boot | Hidden Linux swap | ||
C4h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16 (corresponds with
04h )
[nb 9]
|
C5h |
MBR, EBR | CHS, LBA | No, AAP | Secured container | Digital Research | DR DOS 6.0+ | Secured
extended partition with
CHS addressing (corresponds with
05h )
[nb 9]
|
C6h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16B (corresponds with
06h )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored slave volume (see
B6h and
86h , corresponds with
06h )
| |||
C7h |
MBR | Yes | File system | Syrinx | Syrinx boot | ||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
HPFS/
NTFS mirrored slave volume (see
B7h and
87h , corresponds with
07h )
| |||
C8h |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
C9h |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
CAh |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
CBh |
MBR, EBR | CHS, LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured
FAT32 (corresponds with
0Bh )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored slave volume (see
BBh and
8Bh , corresponds with
0Bh )
| |||
CCh |
MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured
FAT32 (corresponds with
0Ch )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored slave volume (see
BCh and
8Ch , corresponds with
0Ch )
| |||
CDh |
No | Service | Convergent Technologies, Unisys | CTOS | Memory dump (see
DDh and
DBh )
| ||
MBR | LBA | x86 | File system | openSUSE | Linux | openSUSE ISOHybrid ISO9660 partition (from openSUSE Leap "Live" x86 images) [27] | |
CEh |
MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT16B (corresponds with
0Eh )
[nb 9]
|
CFh |
MBR, EBR | LBA | No, AAP | Secured container | Caldera | DR-DOS 7.0x | Secured
extended partition with
LBA (corresponds with
0Fh )
[nb 9]
|
D0h |
MBR | CHS, LBA | 386 | Secured container | Novell, IMS | Multiuser DOS, REAL/32 | Secured FAT partition (larger than 32 MB) [nb 11] [nb 10] |
D1h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT12 (corresponds with
01h )
[nb 11]
|
D4h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16 (corresponds with
04h )
[nb 11]
|
D5h |
MBR, EBR | CHS | No | Secured container | Novell | Multiuser DOS | Secured
extended partition with
CHS addressing (corresponds with
05h )
[nb 11]
|
D6h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16B (corresponds with
06h )
[nb 11]
|
D8h |
MBR | CHS | File system | Digital Research | CP/M-86 |
CP/M-86 (see
DBh )[
citation needed]
| |
DAh |
No | Service | John Hardin | Non-file system data | |||
Secured FS | DataPower | Powercopy Backup | Shielded disk | ||||
DBh |
MBR | CHS | x86 | File system | Digital Research | CP/M-86, Concurrent CP/M-86, Concurrent DOS |
[13] (see
D8h )
[3]
|
? | Convergent Technologies, Unisys | CTOS | ? (see
CDh and
DDh )[
citation needed]
| ||||
x86 | Service | KDG Telemetry | D800 | boot image for x86 supervisor CPU (SCPU) module | |||
MBR | CHS, LBA | x86 | Service FS | Dell | DRMK | FAT32 system restore partition (DSR) (see
DEh )
| |
DDh |
No | Service | Convergent Technologies, Unisys | CTOS | Hidden memory dump (see
CDh and
DBh )
| ||
DEh |
MBR | CHS, LBA | x86 | Hidden FS | Dell | FAT16 utility/diagnostic partition [5] [7] [28] | |
DFh |
? | Data General | DG/UX | DG/UX virtual disk manager[ citation needed] | |||
MBR | Blocker | TeraByte Unlimited | BootIt | EMBRM[ citation needed] | |||
? | ? | Aviion | [ citation needed] | ||||
E0h |
File system | STMicroelectronics | ST AVFS | ||||
E1h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT12 (≤16 MB) (corresponds to
01h )
[nb 6]
| |
E3h |
File system | Storage Dimensions | SpeedStor | Read-only FAT12 (corresponds to
E1h )
[nb 6]
| |||
E4h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16 (≤32 MB) (corresponds to
04h )
[nb 6]
| |
E5h |
MBR | CHS | x86 | File system | Tandy | Tandy MS-DOS | Logical sectored FAT12 or FAT16 [nb 3] |
E6h |
File System | Storage Dimensions | SpeedStor | Read-only FAT16 (corresponds to
E4h )
[nb 6]
| |||
E8h |
MBR, EBR | CHS, LBA | No | Service | Linux | LUKS | Linux Unified Key Setup [29] |
EBh |
386 | File system | Be Inc. | BeOS, Haiku |
BFS (see
2Ah and
2Bh )
| ||
ECh |
File system | Robert Szeleney | SkyOS | SkyFS | |||
EDh |
MBR, EBR | CHS, LBA | x86 | Service | Matthias R. Paul | Sprytix | EDC loader |
MBR | CHS, LBA | x86 | Hewlett-Packard | EFI | Was proposed for GPT hybrid MBR [nb 12] | ||
EEh |
MBR | No | Blocker | Microsoft | EFI |
GPT
protective MBR
[1]
[5] (see
EFh )
| |
EFh |
MBR | Service FS | Intel | EFI |
EFI system partition. Can be a FAT12, FAT16,
FAT32 (or other) file system
[5] (see
EEh )
| ||
F0h |
CHS | Service | Linux | PA-RISC Linux boot loader; must reside in first physical 2 GB | |||
F2h |
MBR | CHS | x86 | File system | Sperry IT, Unisys, Digital Research | Sperry IT MS-DOS 3.x, Unisys MS-DOS 3.3, Digital Research DOS Plus 2.1 | Logical sectored FAT12 or FAT16 [nb 3] secondary partition |
F4h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16B (corresponds to
06h )
[nb 6]
| |
File system | ? | Prologue | Single volume partition for NGF or TwinFS | ||||
F5h |
Container | ? | Prologue | MD0-MD9 multi volume partition for NGF or TwinFS | |||
F6h |
MBR | File system | Storage Dimensions | SpeedStor | Read-only FAT16B (corresponds to
F4h )
[nb 6]
| ||
F7h |
File system | Natalia Portillo | O.S.G. | EFAT | |||
File system | DDRdrive | X1 | Solid State file system | ||||
F8h |
MBR | Service | Arm | Arm EBBR 1.0 [30] | Protective partition for the area containing system firmware | ||
F9h |
Cache | ALC Press | Linux | pCache ext2/ext3 persistent cache [31] | |||
FBh |
No | File system | VMware | VMware ESX | VMware VMFS file system partition | ||
FCh |
No | Swap | VMware | VMware ESX | VMware swap / VMKCORE kernel dump partition | ||
FDh |
Service | Linux | Linux | Linux
RAID superblock with auto-detect (see
86h )
| |||
FEh
|
Service | IBM | PS/2 | PS/2 IML partition [5] [7] | |||
MBR | CHS, LBA | x86 | Service FS | IBM | PS/2 | PS/2 recovery partition (FAT12 reference disk floppy image), (corresponds with
01h if activated, all other partitions +10h then)
[5]
| |
Service | Linux | Linux | Old
Linux LVM (see
8Eh )
| ||||
FFh |
MBR | CHS | No | Service | Microsoft | XENIX | XENIX bad block table (see
02h and
03h )
[3]
|
01h
and
04h
, even if they were otherwise small enough to be recognized by these DOS versions. In order to hide these volumes from these DOS issues
06h
can be used instead. DOS distinguishes FAT types by their number of clusters, not by their partition ID, therefore, this does not cause any problems for DOS 3.31 and higher except for a possibly wrong
file system type display in
FDISK.
07h
,
08h
,
09h
,
4Dh
(77),
4Eh
(78),
4Fh
(79), as well as
B1h
(177),
B2h
(178) and
B3h
(179).
08h
(
Commodore MS-DOS 3.x), 11h
(
Leading Edge MS-DOS 3.x), 14h
(AST MS-DOS 3.x), 24h
(NEC MS-DOS 3.30), 56h
(
AT&T MS-DOS 3.x), E5h
(
Tandy MS-DOS), F2h
(
Sperry IT MS-DOS 3.x,
Unisys MS-DOS 3.3 — also used by
Digital Research
DOS Plus 2.1).
While non-standard and sub-optimal these FAT variants are perfectly valid according to the specifications of the file system itself, although default issues of
MS-DOS /
PC DOS 3.x were not able to cope with them. Most of these vendor specific FAT12 and FAT16 variants can be mounted by more flexible file system implementations in operating systems such as
DR-DOS simply by changing the partition ID to one of the recognized types. Also, if they no longer need to be recognized by their original operating systems, existing partitions can be "converted" into FAT12 and FAT16 volumes compliant with versions of MS-DOS/PC DOS like 5.0-6.3, which do not support logical sector sizes different from 512 bytes, by switching to a
BPB with 32-bit entry for the number of sectors, as introduced since DOS 3.31, keeping the cluster size and reducing the
logical sector size in the BPB down to 512 bytes, while at the same time increasing the
counts of logical sectors per cluster,
reserved logical sectors,
total logical sectors, and
logical sectors per FAT by the same factor.
0Ah
,
11h
,
14h
,
15h
,
16h
,
17h
,
1Bh
,
1Ch
,
1Eh
,
1Fh
.
21h
,
A1h
,
A3h
,
A4h
,
A6h
,
B1h
,
B3h
,
B4h
, and
B6h
.
E1h
,
E4h
and
F4h
which can be marked read-only (becoming
E3h
,
E6h
,
F6h
), hidden (
61h
,
64h
,
74h
) or hidden read-only (
63h
,
66h
,
76h
).
8Dh
,
90h
,
91h
,
92h
,
97h
,
98h
,
9Ah
,
9Bh
.
A8h
,
ABh
,
ACh
, and
AFh
.
C0h
,
C1h
,
C4h
,
C5h
,
C6h
,
CBh
,
CCh
,
CEh
,
CFh
.
C0h
and
D0h
for multi-user security.
D0h
,
D1h
,
D4h
,
D5h
,
D6h
.
The partition type (or partition ID) in a partition's entry in the partition table inside a master boot record (MBR) is a byte value intended to specify the file system the partition contains or to flag special access methods used to access these partitions (e.g. special CHS mappings, LBA access, logical mapped geometries, special driver access, hidden partitions, secured or encrypted file systems, etc.).
Lists of assigned partition types to be used in the partition table in the MBR were originally maintained by IBM and Microsoft internally. When the market of PC operating systems and disk tools grew and liberated, other vendors had a need to assign special partition types to their products as well. As Microsoft neither documented all partition types already assigned by them nor wanted to maintain foreign assignments, third parties started to simply assign partition types on their own behalf in a mostly uncoordinated trial-and-error manner. This led to various conflicting assignments sometimes causing severe compatibility problems between certain products. [1]
Several industry experts including Hale Landis, Ralf D. Brown, Matthias R. Paul, and Andries E. Brouwer in the 1990s started to research partition types and published (and later synchronized) partition type lists in order to help document the industry de facto standard and thereby reduce the risk of further conflicts. Some of them also actively helped to maintain software dealing with partitions to work with the updated lists, indicated conflicts, devised additional detection methods and work-arounds for vendors, or engaged in coordinating new non-conflictive partition type assignments as well.
It is up to an operating system's boot loader or kernel how to interpret the value. So the table specifies which operating systems or disk-related products introduced an ID and what file system or special partition type they mapped it to. Partitions with partition types unknown to the software should be treated as reserved but occupied disk storage space which should not be dealt with by the software, save for partition managers.
While the list is not officially maintained, [1] new assignments should be coordinated.
In particular temporary partition type assignments for local or experimental projects can utilize type
7Fh
in order to avoid conflicts with already assigned types. This type was specially reserved for individual use as part of the Alternative OS Development Partition Standard (AODPS) initiative since 2002.
[2]
This is a list of known master boot record partition types on IBM PC compatible computers:
Partition ID | Occurrence | Access | Bootable | Type | Origin | Supported by | Description |
---|---|---|---|---|---|---|---|
00h |
MBR, EBR | — | No | Free | IBM | All | Empty partition entry |
01h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | File system | IBM | DOS 2.0+ |
FAT12 as primary partition in first physical 32
MB of disk or as logical drive anywhere on disk (else use
06h instead)
[3]
[4]
[5]
|
02h |
MBR | CHS | x86, 68000, Z8000, PDP-11 | File system | Microsoft, SCO | XENIX | XENIX root (see
03h and
FFh )
[3]
|
03h |
MBR | CHS | No | File system | Microsoft, SCO | XENIX | XENIX usr (see
02h and
FFh )
[3]
|
04h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | File system | Microsoft | DOS 3.0+ |
FAT16 with less than 65,536 sectors (32
MB). As primary partition it must reside in first physical 32
MB of disk, or as logical drive anywhere on disk (else use
06h instead).
[3]
[4]
[5]
|
05h |
MBR, EBR | CHS, (LBA) | No, AAP | Container | IBM | Some versions of DOS 3.2, DOS 3.3+ |
Extended partition with
CHS addressing. It must reside within the first physical 8
GB of disk, else use
0Fh instead (see
0Fh ,
85h ,
C5h ,
D5h )
[3]
[4]
[5]
|
06h |
MBR, EBR | CHS, LBA | x86 | File system | Compaq | DOS 3.31+ |
FAT16B with 65,536 or more sectors. It must reside within the first 8
GB of disk unless used for logical drives in an
0Fh extended partition (else use
0Eh instead). Also used for FAT12 and FAT16 volumes in primary partitions if they are not residing in first physical 32
MB of disk.
[nb 1]
[3]
[4]
[5]
|
07h |
MBR, EBR | CHS, LBA | x86 | File system | Microsoft, IBM | OS/2 1.2+ | IFS |
MBR, EBR | CHS, LBA | 286 | File system | IBM | OS/2 1.2+, Windows NT | HPFS [3] | |
MBR, EBR | CHS, LBA | 386 | File system | Microsoft | Windows NT | NTFS [4] [5] | |
MBR, EBR | CHS, LBA | Yes | File system | Microsoft | Windows Embedded CE | exFAT | |
File system | Quantum Software Systems | QNX 2 | QNX "qnx" (7) (pre-1988 only) [6] [nb 2] | ||||
08h |
MBR | CHS | x86 | File system | Commodore | Commodore MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] |
CHS | x86 | File system | IBM | OS/2 1.0-1.3 | OS/2 (FAT?) | ||
File system | IBM | AIX | AIX boot/split | ||||
File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qny" (8) [6] [nb 2] | ||||
Container | Dell | Partition spanning multiple drives | |||||
09h |
File system | IBM | AIX | AIX data/boot | |||
File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qnz" (9) [6] [nb 2] | ||||
MBR | CHS | 286 | File system | Mark Williams Company | Coherent | Coherent file system | |
MBR | File system | Microware | OS-9 | OS-9 RBF | |||
0Ah |
Service | PowerQuest, IBM | OS/2 | OS/2 Boot Manager [nb 4] | |||
Swap | Mark Williams Company | Coherent | Coherent swap partition | ||||
0Bh |
MBR, EBR | CHS, LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with CHS addressing [4] [5] |
0Ch |
MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with LBA [4] [5] |
0Eh |
MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.0+ | FAT16B with LBA [4] [5] |
0Fh |
MBR, EBR | LBA | No, AAP | Container | Microsoft | DOS 7.0+ |
Extended partition with LBA (see
05h and
CFh )
[4]
[5]
|
11h |
MBR | CHS | x86 | File system | Leading Edge | Leading Edge MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT12 (corresponds with
01h )
[nb 4]
| ||||
12h |
MBR | CHS, LBA | x86 | Service FS | Compaq | Configuration partition (bootable FAT with MS-DOS [4] [5] [7]); Recovery partition (bootable FAT32 with Windows setup [8]) | |
MBR | x86 | Service | Gang of Nine | EISA machines | EISA configuration utility for the system [4] [5] | ||
Hibernation | Compaq | Compaq Contura | Hibernation partition [7] | ||||
MBR | x86 | Service FS | NCR | Diagnostics and firmware partition (bootable FAT) [7] | |||
MBR | x86 | Service FS | Intel | Service partition (bootable
FAT)
[7] (see
98h )
| |||
Service FS | IBM | Rescue and Recovery partition [7] | |||||
14h |
File system | AST | AST MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] (see AST MBR) | |||
x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 (corresponds with
04h )
[nb 4]
| |||
LBA | x86 | File system | Lasse Krogh Thygesen | Maverick OS | Omega file system [9] | ||
15h |
No, AAP | Hidden container | IBM | OS/2 Boot Manager | Hidden
extended partition with
CHS addressing (corresponds with
05h )
[nb 4]
| ||
LBA | No | Swap | Lasse Krogh Thygesen | Maverick OS | Swap [9] | ||
16h |
x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16B (corresponds with
06h )
[nb 4]
| ||
17h |
Hidden FS | IBM | OS/2 Boot Manager | Hidden
IFS (corresponds with
07h )
[nb 4]
| |||
Hidden
HPFS (corresponds with
07h )
[nb 4]
| |||||||
Hidden
NTFS (corresponds with
07h )
[nb 4]
| |||||||
Hidden
exFAT (corresponds with
07h )
[nb 4]
| |||||||
18h |
No | Hibernation | AST | AST Windows | AST Zero Volt Suspend or SmartSleep partition | ||
19h |
Willow Schlanger | Willowtech Photon coS | Willowtech Photon coS (see
20h )
| ||||
1Bh |
Hidden FS | IBM | OS/2 Boot Manager | Hidden
FAT32 (corresponds with
0Bh )
[nb 4]
| |||
1Ch |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 with LBA (corresponds with
0Ch )
[nb 4]
| |||
Service FS | ASUS | ASUS eRecovery | ASUS recovery partition (Hidden FAT32 with LBA, see
0Ch )
[10]
| ||||
1Eh |
Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 with LBA (corresponds with
0Eh )
[nb 4]
| |||
1Fh |
MBR, EBR | LBA | Hidden container | IBM | OS/2 Boot Manager | Hidden
extended partition with
LBA addressing (corresponds with
0Fh )
[nb 4]
| |
20h |
? | File system | Microsoft | Windows Mobile | Windows Mobile update XIP | ||
File system | Willow Schlanger | Willowsoft Overture File System (OFS1) (see
19h )
| |||||
21h |
MBR | ? | Hewlett-Packard | HP Volume Expansion | [nb 5] | ||
File system | Dave Poirier | Oxygen | FSo2 (Oxygen File System) (see
22h )
| ||||
22h |
Container | Dave Poirier | Oxygen | Oxygen Extended Partition Table (see
21h )
| |||
23h
|
Yes | File system | Microsoft | Windows Mobile | Windows Mobile boot XIP | ||
24h |
MBR | CHS | x86 | File system | NEC | NEC MS-DOS 3.30 | Logical sectored FAT12 or FAT16 [11] [nb 3] (see NEC MBR) |
27h |
Service FS | Microsoft | Windows |
Windows Recovery Environment (RE) partition (hidden
NTFS partition type
07h )
[12]
| |||
MBR | LBA | Yes | Service FS | Acer | D2D eRecovery | Rescue partition (Hidden NTFS labeled "PQService", corresponds to
07h )
| |
Yes | Service | MikroTik | Linux (RouterBOARD 500) | RooterBOOT kernel partition (contains a raw ELF Linux kernel, no file system) | |||
2Ah |
File system | Kurt Skauen | AtheOS |
AtheOS file system (AthFS, AFS) (an extension of BFS, see
2Bh and
EBh )
| |||
MBR, EBR | LBA | x86 | File system | Reserved (see
CAh )
| |||
2Bh |
File system | Kristian van der Vliet | SyllableOS | SyllableSecure (SylStor), a variant of
AthFS (an extension of BFS, see
2Ah and
EBh )
| |||
30h |
MBR | CHS | x86 | File system | Digital Research | Personal CP/M-86 | Found in some OEM
Siemens systems instead of
DBh .
[13] Filesystem parameters are in the following sector (LBA 1), not the partition itself.
|
31h |
Microsoft, IBM | Reserved | |||||
33h |
Microsoft, IBM | Reserved | |||||
34h |
Microsoft, IBM | Reserved | |||||
35h |
MBR, EBR | CHS, LBA | No | File system | IBM | OS/2 Warp Server / eComStation | JFS (OS/2 implementation of AIX Journaling File system) |
36h |
Microsoft, IBM | Reserved | |||||
38h |
File system | Timothy Williams | THEOS | THEOS version 3.2, 2 GB partition | |||
39h |
Container | Bell Labs | Plan 9 | Plan 9 edition 3 partition (sub-partitions described in second sector of partition) | |||
File system | Timothy Williams | THEOS | THEOS version 4 spanned partition | ||||
3Ah |
File system | Timothy Williams | THEOS | THEOS version 4, 4 GB partition | |||
3Bh |
Container | Timothy Williams | THEOS | THEOS version 4 extended partition | |||
3Ch |
Service | PowerQuest | PartitionMagic | PqRP (PartitionMagic or DriveImage in progress) [14] | |||
3Dh |
Hidden FS | PowerQuest | PartitionMagic | Hidden NetWare | |||
40h |
PICK Systems | PICK | PICK R83 | ||||
VenturCom | Venix | Venix 80286 | |||||
41h |
Yes | Personal RISC | Personal RISC Boot | ||||
Linux | Linux | Old Linux/
Minix (disk shared with DR DOS 6.0) (corresponds with
81h )
| |||||
PowerPC | PowerPC | PowerPC | PPC PReP (Power PC Reference Platform) Boot | ||||
42h |
Secured FS | Peter Gutmann | SFS | Secure File system (SFS) | |||
No | Linux | Linux | Old Linux swap (disk shared with DR DOS 6.0) (corresponds with
82h )
| ||||
Container | Microsoft | Windows 2000, XP, etc. | Dynamic extended partition marker [4] [5] | ||||
43h |
Yes | File system | Linux | Linux | Old Linux native (disk shared with DR DOS 6.0) (corresponds with
83h )
| ||
44h |
Wildfile | GoBack | Norton GoBack, WildFile GoBack, Adaptec GoBack, Roxio GoBack | ||||
45h |
CHS | Priam | Priam (see also
5Ch )
| ||||
MBR | CHS | Yes | Boot-US | Boot-US boot manager (1 cylinder) | |||
Jochen Liedtke, GMD | EUMEL/ ELAN | EUMEL/ELAN (L2) | |||||
46h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2) | ||||
47h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2) | ||||
48h |
Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN (L2), ERGOS L3 | ||||
4Ah |
MBR | Yes | Nick Roberts | AdaOS | Aquila (see
7Fh )
| ||
MBR, EBR | CHS, LBA | No | File system | Mark Aitchison | ALFS/THIN | ALFS/THIN advanced lightweight file system for DOS | |
4Ch |
ETH Zürich | ETH Oberon | Aos (A2) file system (76) | ||||
4Dh |
Quantum Software Systems | QNX 4.x, Neutrino | Primary QNX POSIX volume on disk (77) [6] [nb 2] | ||||
4Eh |
Quantum Software Systems | QNX 4.x, Neutrino | Secondary QNX POSIX volume on disk (78) [6] [nb 2] | ||||
4Fh |
Quantum Software Systems | QNX 4.x, Neutrino | Tertiary QNX POSIX volume on disk (79) [6] [nb 2] | ||||
Yes | ETH Zürich | ETH Oberon | Boot / native file system (79) | ||||
50h |
ETH Zürich | ETH Oberon | Alternative native file system (80) | ||||
No | Ontrack | Disk Manager 4 | Read-only partition (old) | ||||
LynxOS | Lynx RTOS | ||||||
Novell | |||||||
51h |
Novell | ||||||
No | Ontrack | Disk Manager 4-6 | Read-write partition (Aux 1) | ||||
52h |
MBR | CHS | File system | Digital Research | CP/M-80 | CP/M-80 | |
Microport | System V/AT, V/386 | ||||||
53h |
Ontrack | Disk Manager 6 | Auxiliary 3 (WO) | ||||
54h |
Ontrack | Disk Manager 6 | Dynamic Drive Overlay (DDO) | ||||
55h |
MicroHouse / StorageSoft | EZ-Drive | EZ-Drive, Maxtor, MaxBlast, or DriveGuide INT 13h redirector volume | ||||
56h |
AT&T | AT&T MS-DOS 3.x | Logical sectored FAT12 or FAT16 [nb 3] | ||||
MicroHouse / StorageSoft | EZ-Drive | Disk Manager partition converted to EZ-BIOS | |||||
Golden Bow | VFeature | VFeature partitioned volume | |||||
57h |
MicroHouse / StorageSoft | DrivePro | |||||
Novell | VNDI partition | ||||||
59h |
MBR, EBR | CHS, LBA | Yes | File system | Yocto | yocOS | yocFS |
5Ch |
CHS | Container | Priam | EDISK | Priam EDisk Partitioned Volume (see also
45h )
| ||
61h |
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT12 (corresponds to
E1h )
[nb 6]
| |
63h |
CHS | File system | AT&T | SCO Unix, ISC, UnixWare, AT&T System V/386, ix, MtXinu BSD 4.3 on Mach | |||
CHS | Yes | File system | Mach and BSD [15] [16] | GNU/Hurd | Old
GNU/Hurd with UFS
[15] support (corresponds with
83h )
| ||
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT12 (corresponds to
E3h )
[nb 6]
| ||
64h |
? | Storage Dimensions | SpeedStor | Hidden FAT16 (corresponds to
E4h )
[nb 6]
| |||
File system | Novell | NetWare | NetWare File System 286/2 [3] | ||||
Secured FS | Solomon | PC-ARMOUR | |||||
65h |
File system | Novell | NetWare | NetWare File System 386 | |||
66h |
? | Novell | NetWare | Storage Management Services (SMS) | |||
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT16 (corresponds to
E6h )
[nb 6]
| ||
67h |
? | Novell | NetWare | Wolf Mountain cluster | |||
68h |
? | Novell | NetWare | ||||
69h |
? | Novell | NetWare 5 | ||||
? | Novell | NetWare | Novell Storage Services (NSS) | ||||
6Ch |
MBR | CHS, LBA | x86 | Container | DragonFly BSD | BSD | BSD slice (DragonFly BSD) [17] |
70h |
Service | DiskSecure | DiskSecure multiboot | ||||
71h |
Microsoft, IBM | Reserved | |||||
72h |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT12 (CHS, SFN) (corresponds with
01h )
| |
File system | Nordier | Unix V7/x86 | V7/x86 | ||||
73h |
Microsoft, IBM | Reserved | |||||
74h |
MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT16B (corresponds to
F4h )
[nb 6]
| |
75h |
File system | IBM | PC/IX | [3] | |||
76h |
Storage Dimensions | SpeedStor | Hidden read-only FAT16B (corresponds to
F6h )
[nb 6]
| ||||
77h |
File system | Novell | VNDI, M2FS, M2CS | ||||
78h |
Yes | File system | Geurt Vos | XOSL bootloader file system | |||
79h |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 (CHS, SFN) (corresponds with
04h )
| |
7Ah |
MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 (LBA, SFN) (corresponds with
0Eh )
| |
7Bh |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16B (CHS, SFN) (corresponds with
06h )
| |
7Ch |
MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (LBA, SFN) (corresponds with
0Ch )
| |
7Dh |
MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (CHS, SFN) (corresponds with
0Bh )
| |
7Eh |
MBR, EBR | No | Cache | Romex Software | PrimoCache | Level 2 cache | |
7Fh |
MBR, EBR | Alternative OS Development Partition Standard | Reserved for individual or local use and temporary or experimental projects [2] | ||||
80h |
File system | Andrew Tanenbaum | Minix 1.1-1.4a | MINIX file system (old) | |||
81h |
File system | Andrew Tanenbaum | Minix 1.4b+ | MINIX file system (corresponds with
41h )
| |||
82h |
No | Swap | Linux | Linux |
Linux swap space (corresponds with
42h )
| ||
No | Swap | Linux | GNU/Hurd | GNU/Hurd ( Hurd uses the same Linux swap file system) | |||
x86 | Container | Sun Microsystems |
Solaris x86 (for Sun disklabels up to 2005) (see
BFh )
| ||||
83h |
Yes | File system | Linux | Linux | Any native
Linux file system (see
93h , corresponds with
43h )
| ||
Yes | File system | Linux | GNU/Hurd |
GNU/Hurd (
Hurd and
GRUB use the same Linux ext2 file system to run and it no longer supports UFS
[15] file system, corresponds with
63h )
| |||
84h |
No | Hibernation | Microsoft | ? | APM hibernation (suspend to disk, S2D) [5] [7] [18] | ||
Hidden FS | IBM | OS/2 | Hidden C: (FAT16)(corresponds to either 04h or 06h) | ||||
Hibernation | Intel | Rapid Start technology | Rapid Start hibernation data [19] (possibly iFFS; possibly used for Intel SRT SSD cache as well) | ||||
85h |
No, AAP | Container | Linux | Linux | Linux
extended
[20] (corresponds with
05h )
| ||
86h |
File system | Microsoft | Windows NT 4 Server |
Fault-tolerant FAT16B mirrored volume set (see
B6h and
C6h , corresponds with
06h )
[4]
[5]
| |||
Service | Linux | Linux | Linux
RAID superblock with auto-detect (old) (see
FDh )[
citation needed]
| ||||
87h |
File system | Microsoft | Windows NT 4 Server | Fault-tolerant
HPFS/
NTFS mirrored volume set (see
B7h and
C7h , corresponds with
07h )
[4]
[5]
| |||
88h |
Service | Linux | Linux | Linux plaintext partition table | |||
8Ah |
Service | Martin Kiewitz | AirBoot | AirBoot is a track0 Boot Manager with on-the-fly partition detection [21] | |||
8Bh |
File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant
FAT32 mirrored volume set (see
BBh and
CBh , corresponds with
0Bh )
[4]
| |||
8Ch |
File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set (see
BCh and
CCh , corresponds with
0Ch )
[4]
| |||
8Dh |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT12 (corresponds with
01h )
[nb 7]
|
8Eh |
Container | Linux | Linux |
Linux LVM since 1999 (see
FEh )[
citation needed]
| |||
90h |
MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with
04h )
[nb 7]
|
91h |
MBR, EBR | CHS, LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden
extended partition with
CHS addressing (corresponds with
05h )
[nb 7]
|
92h |
MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16B (corresponds with
06h )
[nb 7]
|
93h |
File system | Andrew S. Tanenbaum | Amoeba | Amoeba native file system | |||
Hidden FS | Linux | Hidden Linux file system (see
83h )
| |||||
94h |
Service | Andrew S. Tanenbaum | Amoeba | Amoeba bad block table | |||
95h |
File system | MIT | EXOPC | EXOPC native | |||
96h |
File system | ? | CHRP | ISO-9660 file system [22] | |||
97h |
MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden
FAT32 (corresponds with
0Bh )
[nb 7]
|
98h |
MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden
FAT32 (corresponds with
0Ch )
[nb 7]
|
MBR | CHS, LBA | x86 | Service FS | Datalight | ROM-DOS | Service partition (bootable
FAT) ROM-DOS SuperBoot (see
12h )
| |
MBR | CHS, LBA | x86 | Service FS | Intel | ? | Service partition (bootable
FAT)
[7] (see
12h )
| |
99h |
File system | ? | ? | Early Unix[ citation needed] | |||
9Ah |
MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with
0Eh )
[nb 7]
|
9Bh |
MBR, EBR | LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden
extended partition with
LBA (corresponds with
0Fh )
[nb 7]
|
9Eh |
File system | Andy Valencia | VSTa | [ citation needed] | |||
File system | Andy Valencia | ForthOS | ForthOS (eForth port) [23] | ||||
9Fh |
? | ? | BSD/OS 3.0+, BSDI | (see
B7h and
B8h )
| |||
A0h |
MBR | Service FS | Hewlett-Packard | ? | Diagnostic partition for HP laptops [7] | ||
Hibernation | Phoenix, IBM, Toshiba, Sony | ? | Hibernate partition [5] | ||||
A1h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
Hibernation | Phoenix, NEC | ? | Hibernate partition | ||||
A2h |
MBR | CHS, LBA | ARM | Image | Altera | Cyclone V | Hard Processor System (HPS) ARM preloader [24] |
A3h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
A4h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
A5h |
MBR | Container | FreeBSD | BSD | BSD slice (BSD/386, 386BSD, NetBSD (before 1998-02-19), FreeBSD) [25] | ||
A6h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
MBR | Container | OpenBSD | OpenBSD | OpenBSD slice | |||
A7h |
386 | File system | NeXT | NeXTSTEP | [ citation needed] | ||
A8h |
File system | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X UFS [nb 8] | |||
A9h |
MBR | Container | NetBSD | NetBSD | NetBSD slice [26] | ||
AAh |
MBR | CHS | ? | File system | Olivetti | MS-DOS | Olivetti MS-DOS FAT12 (1.44 MB) (corresponds with
06h )
|
ABh |
Yes | Service | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X boot [nb 8] | ||
File system | Stanislav Karchebny | GO! OS | GO! | ||||
ACh |
Yes | Service | Apple | Darwin, Mac OS X | Apple RAID, Mac OS X RAID [nb 8] | ||
ADh |
File system | Ben Avison, Acorn | RISC OS | ADFS / FileCore format | |||
AEh |
x86 | File system | Frank Barrus | ShagOS | ShagOS file system | ||
AFh |
? | File system | Apple | Mac OS X | HFS and HFS+ [nb 8] | ||
No | Swap | Frank Barrus | ShagOS | ShagOS swap | |||
B0h |
MBR | CHS, LBA | x86 | Blocker | Star-Tools | Boot-Star | Boot-Star dummy partition |
B1h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | ||||
B2h |
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | |||
B3h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system [nb 2] | ||||
B4h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
B6h |
? | Hewlett-Packard | HP Volume Expansion | [nb 5] | |||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored master volume (see
C6h and
86h , corresponds with
06h )
| |||
B7h |
File system | BSDI (before 3.0) | BSDI native file system / swap (see
B8h and
9Fh )
| ||||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
HPFS/
NTFS mirrored master volume (see
C7h and
87h , corresponds with
07h )
| |||
B8h |
File system | BSDI (before 3.0) | BSDI swap / native file system (see
B7h and
9Fh )
| ||||
BBh |
Hidden FS | PhysTechSoft, Acronis, SWsoft | BootWizard, OS Selector | PTS BootWizard 4 / OS Selector 5 for hidden partitions other than
01h ,
04h ,
06h ,
07h ,
0Bh ,
0Ch ,
0Eh and unformatted partitions
| |||
MBR | Service FS | Acronis | Acronis True Image | OEM Secure Zone (corresponds to
BCh )
| |||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored master volume (see
CBh and
8Bh , corresponds with
0Bh )
| |||
BCh |
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored master volume (see
CCh and
8Ch , corresponds with
0Ch )
| ||
MBR | LBA | Service FS | Acronis | Acronis True Image | Acronis Secure Zone | ||
MBR, EBR | Service FS | Paragon Software Group | Backup Capsule | Backup Capsule[ citation needed] | |||
BDh |
File system | ? | BonnyDOS/286 | [ citation needed] | |||
BEh |
Yes | File system | Sun Microsystems | Solaris 8 | Solaris 8 boot | ||
BFh |
x86 | Container | Sun Microsystems | Solaris | Solaris x86 (for Sun disklabels, since 2005) (see
82h )
| ||
C0h |
MBR | CHS, LBA | x86 | Secured container | Novell, IMS | DR-DOS, Multiuser DOS, REAL/32 | Secured FAT partition (smaller than 32 MB) [nb 9] [nb 10] |
C1h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured
FAT12 (corresponds with
01h )
[nb 9]
|
C2h |
Yes | Hidden FS | BlueSky Innovations | Power Boot | Hidden Linux native file system | ||
C3h |
No | Hidden swap | BlueSky Innovations | Power Boot | Hidden Linux swap | ||
C4h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16 (corresponds with
04h )
[nb 9]
|
C5h |
MBR, EBR | CHS, LBA | No, AAP | Secured container | Digital Research | DR DOS 6.0+ | Secured
extended partition with
CHS addressing (corresponds with
05h )
[nb 9]
|
C6h |
MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16B (corresponds with
06h )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored slave volume (see
B6h and
86h , corresponds with
06h )
| |||
C7h |
MBR | Yes | File system | Syrinx | Syrinx boot | ||
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
HPFS/
NTFS mirrored slave volume (see
B7h and
87h , corresponds with
07h )
| |||
C8h |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
C9h |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
CAh |
? | Reserved for DR-DOS since 1997[ citation needed] | |||||
CBh |
MBR, EBR | CHS, LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured
FAT32 (corresponds with
0Bh )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored slave volume (see
BBh and
8Bh , corresponds with
0Bh )
| |||
CCh |
MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured
FAT32 (corresponds with
0Ch )
[nb 9]
|
EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant
FAT32 mirrored slave volume (see
BCh and
8Ch , corresponds with
0Ch )
| |||
CDh |
No | Service | Convergent Technologies, Unisys | CTOS | Memory dump (see
DDh and
DBh )
| ||
MBR | LBA | x86 | File system | openSUSE | Linux | openSUSE ISOHybrid ISO9660 partition (from openSUSE Leap "Live" x86 images) [27] | |
CEh |
MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT16B (corresponds with
0Eh )
[nb 9]
|
CFh |
MBR, EBR | LBA | No, AAP | Secured container | Caldera | DR-DOS 7.0x | Secured
extended partition with
LBA (corresponds with
0Fh )
[nb 9]
|
D0h |
MBR | CHS, LBA | 386 | Secured container | Novell, IMS | Multiuser DOS, REAL/32 | Secured FAT partition (larger than 32 MB) [nb 11] [nb 10] |
D1h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT12 (corresponds with
01h )
[nb 11]
|
D4h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16 (corresponds with
04h )
[nb 11]
|
D5h |
MBR, EBR | CHS | No | Secured container | Novell | Multiuser DOS | Secured
extended partition with
CHS addressing (corresponds with
05h )
[nb 11]
|
D6h |
MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16B (corresponds with
06h )
[nb 11]
|
D8h |
MBR | CHS | File system | Digital Research | CP/M-86 |
CP/M-86 (see
DBh )[
citation needed]
| |
DAh |
No | Service | John Hardin | Non-file system data | |||
Secured FS | DataPower | Powercopy Backup | Shielded disk | ||||
DBh |
MBR | CHS | x86 | File system | Digital Research | CP/M-86, Concurrent CP/M-86, Concurrent DOS |
[13] (see
D8h )
[3]
|
? | Convergent Technologies, Unisys | CTOS | ? (see
CDh and
DDh )[
citation needed]
| ||||
x86 | Service | KDG Telemetry | D800 | boot image for x86 supervisor CPU (SCPU) module | |||
MBR | CHS, LBA | x86 | Service FS | Dell | DRMK | FAT32 system restore partition (DSR) (see
DEh )
| |
DDh |
No | Service | Convergent Technologies, Unisys | CTOS | Hidden memory dump (see
CDh and
DBh )
| ||
DEh |
MBR | CHS, LBA | x86 | Hidden FS | Dell | FAT16 utility/diagnostic partition [5] [7] [28] | |
DFh |
? | Data General | DG/UX | DG/UX virtual disk manager[ citation needed] | |||
MBR | Blocker | TeraByte Unlimited | BootIt | EMBRM[ citation needed] | |||
? | ? | Aviion | [ citation needed] | ||||
E0h |
File system | STMicroelectronics | ST AVFS | ||||
E1h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT12 (≤16 MB) (corresponds to
01h )
[nb 6]
| |
E3h |
File system | Storage Dimensions | SpeedStor | Read-only FAT12 (corresponds to
E1h )
[nb 6]
| |||
E4h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16 (≤32 MB) (corresponds to
04h )
[nb 6]
| |
E5h |
MBR | CHS | x86 | File system | Tandy | Tandy MS-DOS | Logical sectored FAT12 or FAT16 [nb 3] |
E6h |
File System | Storage Dimensions | SpeedStor | Read-only FAT16 (corresponds to
E4h )
[nb 6]
| |||
E8h |
MBR, EBR | CHS, LBA | No | Service | Linux | LUKS | Linux Unified Key Setup [29] |
EBh |
386 | File system | Be Inc. | BeOS, Haiku |
BFS (see
2Ah and
2Bh )
| ||
ECh |
File system | Robert Szeleney | SkyOS | SkyFS | |||
EDh |
MBR, EBR | CHS, LBA | x86 | Service | Matthias R. Paul | Sprytix | EDC loader |
MBR | CHS, LBA | x86 | Hewlett-Packard | EFI | Was proposed for GPT hybrid MBR [nb 12] | ||
EEh |
MBR | No | Blocker | Microsoft | EFI |
GPT
protective MBR
[1]
[5] (see
EFh )
| |
EFh |
MBR | Service FS | Intel | EFI |
EFI system partition. Can be a FAT12, FAT16,
FAT32 (or other) file system
[5] (see
EEh )
| ||
F0h |
CHS | Service | Linux | PA-RISC Linux boot loader; must reside in first physical 2 GB | |||
F2h |
MBR | CHS | x86 | File system | Sperry IT, Unisys, Digital Research | Sperry IT MS-DOS 3.x, Unisys MS-DOS 3.3, Digital Research DOS Plus 2.1 | Logical sectored FAT12 or FAT16 [nb 3] secondary partition |
F4h |
MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16B (corresponds to
06h )
[nb 6]
| |
File system | ? | Prologue | Single volume partition for NGF or TwinFS | ||||
F5h |
Container | ? | Prologue | MD0-MD9 multi volume partition for NGF or TwinFS | |||
F6h |
MBR | File system | Storage Dimensions | SpeedStor | Read-only FAT16B (corresponds to
F4h )
[nb 6]
| ||
F7h |
File system | Natalia Portillo | O.S.G. | EFAT | |||
File system | DDRdrive | X1 | Solid State file system | ||||
F8h |
MBR | Service | Arm | Arm EBBR 1.0 [30] | Protective partition for the area containing system firmware | ||
F9h |
Cache | ALC Press | Linux | pCache ext2/ext3 persistent cache [31] | |||
FBh |
No | File system | VMware | VMware ESX | VMware VMFS file system partition | ||
FCh |
No | Swap | VMware | VMware ESX | VMware swap / VMKCORE kernel dump partition | ||
FDh |
Service | Linux | Linux | Linux
RAID superblock with auto-detect (see
86h )
| |||
FEh
|
Service | IBM | PS/2 | PS/2 IML partition [5] [7] | |||
MBR | CHS, LBA | x86 | Service FS | IBM | PS/2 | PS/2 recovery partition (FAT12 reference disk floppy image), (corresponds with
01h if activated, all other partitions +10h then)
[5]
| |
Service | Linux | Linux | Old
Linux LVM (see
8Eh )
| ||||
FFh |
MBR | CHS | No | Service | Microsoft | XENIX | XENIX bad block table (see
02h and
03h )
[3]
|
01h
and
04h
, even if they were otherwise small enough to be recognized by these DOS versions. In order to hide these volumes from these DOS issues
06h
can be used instead. DOS distinguishes FAT types by their number of clusters, not by their partition ID, therefore, this does not cause any problems for DOS 3.31 and higher except for a possibly wrong
file system type display in
FDISK.
07h
,
08h
,
09h
,
4Dh
(77),
4Eh
(78),
4Fh
(79), as well as
B1h
(177),
B2h
(178) and
B3h
(179).
08h
(
Commodore MS-DOS 3.x), 11h
(
Leading Edge MS-DOS 3.x), 14h
(AST MS-DOS 3.x), 24h
(NEC MS-DOS 3.30), 56h
(
AT&T MS-DOS 3.x), E5h
(
Tandy MS-DOS), F2h
(
Sperry IT MS-DOS 3.x,
Unisys MS-DOS 3.3 — also used by
Digital Research
DOS Plus 2.1).
While non-standard and sub-optimal these FAT variants are perfectly valid according to the specifications of the file system itself, although default issues of
MS-DOS /
PC DOS 3.x were not able to cope with them. Most of these vendor specific FAT12 and FAT16 variants can be mounted by more flexible file system implementations in operating systems such as
DR-DOS simply by changing the partition ID to one of the recognized types. Also, if they no longer need to be recognized by their original operating systems, existing partitions can be "converted" into FAT12 and FAT16 volumes compliant with versions of MS-DOS/PC DOS like 5.0-6.3, which do not support logical sector sizes different from 512 bytes, by switching to a
BPB with 32-bit entry for the number of sectors, as introduced since DOS 3.31, keeping the cluster size and reducing the
logical sector size in the BPB down to 512 bytes, while at the same time increasing the
counts of logical sectors per cluster,
reserved logical sectors,
total logical sectors, and
logical sectors per FAT by the same factor.
0Ah
,
11h
,
14h
,
15h
,
16h
,
17h
,
1Bh
,
1Ch
,
1Eh
,
1Fh
.
21h
,
A1h
,
A3h
,
A4h
,
A6h
,
B1h
,
B3h
,
B4h
, and
B6h
.
E1h
,
E4h
and
F4h
which can be marked read-only (becoming
E3h
,
E6h
,
F6h
), hidden (
61h
,
64h
,
74h
) or hidden read-only (
63h
,
66h
,
76h
).
8Dh
,
90h
,
91h
,
92h
,
97h
,
98h
,
9Ah
,
9Bh
.
A8h
,
ABh
,
ACh
, and
AFh
.
C0h
,
C1h
,
C4h
,
C5h
,
C6h
,
CBh
,
CCh
,
CEh
,
CFh
.
C0h
and
D0h
for multi-user security.
D0h
,
D1h
,
D4h
,
D5h
,
D6h
.