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.
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, new assignments should be coordinated.
In particular temporary partition type assignments for local or experimental projects can utilize type [[#PID 7Fh|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.[1]
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 | Free | All | Empty partition entry | |||||
01h | MBR, EBR | 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 [[#PID 06h|06h]] instead) | ||
02h | MBR | CHS | x86, 68000, Z8000, PDP-11 | File system | XENIX root (see [[#PID 03h|03h]] and [[#PID FFh|FFh]]) | |||
03h | MBR | CHS | File system | Microsoft, SCO | XENIX | XENIX usr (see [[#PID 02h|02h]] and [[#PID FFh|FFh]]) | ||
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 [[#PID 06h|06h]] instead). | |
05h | MBR, EBR | CHS, (LBA) | 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 [[#PID 0Fh|0Fh]] instead (see [[#PID 0Fh|0Fh]], [[#PID 85h|85h]], [[#PID C5h|C5h]], [[#PID D5h|D5h]]) | ||
06h | MBR, EBR | CHS, LBA | x86 | File system | 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 [[#PID 0Fh|0Fh]] extended partition (else use [[#PID 0Eh|0Eh]] instead). Also used for FAT12 and FAT16 volumes in primary partitions if they are not residing in first physical 32 MB of disk. | ||
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 | ||
| MBR, EBR | CHS, LBA | 386 | File system | Microsoft | NTFS | |||
| MBR, EBR | CHS, LBA | File system | Microsoft | exFAT | ||||
| File system | QNX 2 | QNX "qnx" (7) (pre-1988 only) | ||||||
08h | MBR | CHS | x86 | File system | Commodore MS-DOS 3.x | Logical sectored FAT12 or FAT16 | ||
| CHS | x86 | File system | IBM | OS/2 1.0-1.3 | OS/2 (FAT?) | |||
| File system | IBM | AIX boot/split | ||||||
| File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qny" (8) | |||||
| Container | 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) | |||||
| MBR | CHS | 286 | File system | Coherent file system | ||||
| MBR | File system | OS-9 RBF | ||||||
0Ah | Service | PowerQuest, IBM | OS/2 | OS/2 Boot Manager | ||||
| Swap | Mark Williams Company | Coherent | Coherent swap partition | |||||
0Bh | MBR, EBR | CHS, LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with CHS addressing | |
0Ch | MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.1+ | FAT32 with LBA | |
0Eh | MBR, EBR | LBA | x86 | File system | Microsoft | DOS 7.0+ | FAT16B with LBA | |
0Fh | MBR, EBR | LBA | , AAP | Container | Microsoft | DOS 7.0+ | Extended partition with LBA (see [[#PID 05h|05h]] and [[#PID CFh|CFh]]) | |
11h | MBR | CHS | x86 | File system | Leading Edge MS-DOS 3.x | Logical sectored FAT12 or FAT16 | ||
| Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT12 (corresponds with [[#PID 01h|01h]]) | |||||
12h | MBR | CHS, LBA | x86 | Service FS | Compaq | Configuration partition (bootable FAT with MS-DOS); Recovery partition (bootable FAT32 with Windows setup[2]) | ||
| MBR | x86 | Service | EISA machines | EISA configuration utility for the system | ||||
| Hibernation | Compaq | Hibernation partition | ||||||
| MBR | x86 | Service FS | Diagnostics and firmware partition (bootable FAT) | |||||
| MBR | x86 | Service FS | Service partition (bootable FAT) (see [[#PID 98h|98h]]) | |||||
| Service FS | IBM | Rescue and Recovery partition | ||||||
14h | File system | AST MS-DOS 3.x | Logical sectored FAT12 or FAT16 (see AST MBR) | |||||
| x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 (corresponds with [[#PID 04h|04h]]) | ||||
| LBA | x86 | File system | Lasse Krogh Thygesen | Maverick OS | Omega file system[3] | |||
15h | , AAP | Hidden container | IBM | OS/2 Boot Manager | Hidden extended partition with CHS addressing (corresponds with [[#PID 05h|05h]]) | |||
| LBA | No | Swap | Lasse Krogh Thygesen | Maverick OS | Swap | |||
16h | x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16B (corresponds with [[#PID 06h|06h]]) | |||
17h | Hidden FS | IBM | OS/2 Boot Manager | Hidden IFS (corresponds with [[#PID 07h|07h]]) | ||||
Hidden HPFS (corresponds with [[#PID 07h|07h]]) | ||||||||
Hidden NTFS (corresponds with [[#PID 07h|07h]]) | ||||||||
Hidden exFAT (corresponds with [[#PID 07h|07h]]) | ||||||||
18h | Hibernation | AST | AST Windows | AST Zero Volt Suspend or SmartSleep partition | ||||
19h | Willow Schlanger | Willowtech Photon coS | Willowtech Photon coS (see [[#PID 20h|20h]]) | |||||
1Bh | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 (corresponds with [[#PID 0Bh|0Bh]]) | ||||
1Ch | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 with LBA (corresponds with [[#PID 0Ch|0Ch]]) | ||||
| Service FS | ASUS | ASUS eRecovery | ASUS recovery partition (Hidden FAT32 with LBA, see [[#PID 0Ch|0Ch]])[4] | |||||
1Eh | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 with LBA (corresponds with [[#PID 0Eh|0Eh]]) | ||||
1Fh | MBR, EBR | LBA | Hidden container | IBM | OS/2 Boot Manager | Hidden extended partition with LBA addressing (corresponds with [[#PID 0Fh|0Fh]]) | ||
20h | ? | File system | Microsoft | Windows Mobile update XIP | ||||
| File system | Willow Schlanger | Willowsoft Overture File System (OFS1) (see [[#PID 19h|19h]]) | ||||||
21h | MBR | ? | HP Volume Expansion | |||||
| File system | Dave Poirier | Oxygen | FSo2 (Oxygen File System) (see [[#PID 22h|22h]]) | |||||
22h | Container | Dave Poirier | Oxygen | Oxygen Extended Partition Table (see [[#PID 21h|21h]]) | ||||
23h | File system | Microsoft | Windows Mobile | Windows Mobile boot XIP | ||||
24h | MBR | CHS | x86 | File system | NEC MS-DOS 3.30 | Logical sectored FAT12 or FAT16 (see NEC MBR) | ||
27h | Service FS | Windows | Windows Recovery Environment (RE) partition (hidden NTFS partition type [[#PID 07h|07h]]) | |||||
| MBR | LBA | Service FS | D2D eRecovery | Rescue partition (Hidden NTFS labeled "PQService", corresponds to [[#PID 07h|07h]]) | ||||
| Service | MikroTik | Linux (RouterBOARD 500) | RooterBOOT kernel partition (contains a raw ELF Linux kernel, no file system) | |||||
2Ah | File system | Kurt Skauen | AtheOS file system (AthFS, AFS) (an extension of BFS, see [[#PID 2Bh|2Bh]] and [[#PID EBh|EBh]]) | |||||
| MBR, EBR | LBA | x86 | File system | Reserved (see [[#PID CAh|CAh]]) | ||||
2Bh | File system | Kristian van der Vliet | SyllableSecure (SylStor), a variant of AthFS (an extension of BFS, see [[#PID 2Ah|2Ah]] and [[#PID EBh|EBh]]) | |||||
30h | MBR | CHS | x86 | File system | Found in some OEM Siemens systems instead of [[#PID DBh|DBh]]. 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 | File system | IBM | JFS (OS/2 implementation of AIX Journaling File system) | |||
36h | Microsoft, IBM | Reserved | ||||||
38h | File system | Timothy Williams | THEOS version 3.2, 2 GB partition | |||||
39h | Container | 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 | PqRP (PartitionMagic or DriveImage in progress) | ||||||
3Dh | Hidden FS | PowerQuest | PartitionMagic | Hidden NetWare | ||||
40h | PICK Systems | PICK R83 | ||||||
| Venix 80286 | ||||||||
41h | Personal RISC | Personal RISC Boot | ||||||
| Linux | Old Linux/Minix (disk shared with DR DOS 6.0) (corresponds with [[#PID 81h|81h]]) | |||||||
| PowerPC | PowerPC | PowerPC | PPC PReP (Power PC Reference Platform) Boot | |||||
42h | Secured FS | SFS | Secure File system (SFS) | |||||
| Linux | Linux | Old Linux swap (disk shared with DR DOS 6.0) (corresponds with [[#PID 82h|82h]]) | ||||||
| Container | Microsoft | Windows 2000, XP, etc. | Dynamic extended partition marker | |||||
43h | File system | Linux | Linux | Old Linux native (disk shared with DR DOS 6.0) (corresponds with [[#PID 83h|83h]]) | ||||
44h | Wildfile | Norton GoBack, WildFile GoBack, Adaptec GoBack, Roxio GoBack | ||||||
45h | CHS | Priam (see also [[#PID 5Ch|5Ch]]) | ||||||
| MBR | CHS | Boot-US | Boot-US boot manager (1 cylinder) | |||||
| 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 | Nick Roberts | AdaOS | Aquila (see [[#PID 7Fh|7Fh]]) | ||||
| MBR, EBR | CHS, LBA | File system | Mark Aitchison | ALFS/THIN | ALFS/THIN advanced lightweight file system for DOS | |||
4Ch | Aos (A2) file system (76) | |||||||
4Dh | QNX 4.x, Neutrino | Primary QNX POSIX volume on disk (77) | ||||||
4Eh | Quantum Software Systems | QNX 4.x, Neutrino | Secondary QNX POSIX volume on disk (78) | |||||
4Fh | Quantum Software Systems | QNX 4.x, Neutrino | Tertiary QNX POSIX volume on disk (79) | |||||
| ETH Zürich | ETH Oberon | Boot / native file system (79) | ||||||
50h | ETH Zürich | ETH Oberon | Alternative native file system (80) | |||||
| Ontrack | Disk Manager 4 | Read-only partition (old) | ||||||
| Lynx RTOS | ||||||||
| Novell | ||||||||
51h | Novell | |||||||
| Ontrack | Disk Manager 4-6 | Read-write partition (Aux 1) | ||||||
52h | MBR | CHS | File system | CP/M-80 | ||||
| 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 MS-DOS 3.x | Logical sectored FAT12 or FAT16 | ||||||
| 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 | File system | Yocto | yocOS | yocFS | ||
5Ch | CHS | Container | Priam EDisk Partitioned Volume (see also [[#PID 45h|45h]]) | |||||
61h | MBR | CHS | Hidden FS | Hidden FAT12 (corresponds to [[#PID E1h|E1h]])[5] | ||||
63h | CHS | File system | AT&T | SCO Unix, ISC, UnixWare, AT&T System V/386, ix, MtXinu BSD 4.3 on Mach | ||||
| CHS | File system | Mach and BSD[6] [7] | GNU/Hurd | Old GNU/Hurd with UFS support (corresponds with [[#PID 83h|83h]]) | ||||
| MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT12 (corresponds to [[#PID E3h|E3h]]) | |||
64h | ? | Hidden FAT16 (corresponds to [[#PID E4h|E4h]]) | ||||||
| File system | NetWare File System 286/2 | |||||||
| 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 | Hidden read-only FAT16 (corresponds to [[#PID E6h|E6h]]) | |||||
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 | BSD | BSD slice (DragonFly BSD)[8] | ||
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 [[#PID 01h|01h]]) | ||
| File system | Nordier | Unix V7/x86 | V7/x86 | |||||
73h | Microsoft, IBM | Reserved | ||||||
74h | MBR | CHS | Hidden FS | Hidden FAT16B (corresponds to [[#PID F4h|F4h]]) | ||||
75h | File system | IBM | ||||||
76h | SpeedStor | Hidden read-only FAT16B (corresponds to [[#PID F6h|F6h]]) | ||||||
77h | File system | Novell | VNDI, M2FS, M2CS | |||||
78h | 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 [[#PID 04h|04h]]) | ||
7Ah | MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 (LBA, SFN) (corresponds with [[#PID 0Eh|0Eh]]) | ||
7Bh | MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16B (CHS, SFN) (corresponds with [[#PID 06h|06h]]) | ||
7Ch | MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (LBA, SFN) (corresponds with [[#PID 0Ch|0Ch]]) | ||
7Dh | MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 (CHS, SFN) (corresponds with [[#PID 0Bh|0Bh]]) | ||
7Eh | MBR, EBR | 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 | |||||
80h | File system | Minix 1.1-1.4a | MINIX file system (old) | |||||
81h | File system | Andrew Tanenbaum | Minix 1.4b+ | MINIX file system (corresponds with [[#PID 41h|41h]]) | ||||
82h | Swap | Linux | Linux | Linux swap space (corresponds with [[#PID 42h|42h]]) | ||||
| Swap | Linux | GNU/Hurd | GNU/Hurd (Hurd uses the same Linux swap file system) | |||||
| x86 | Container | Solaris x86 (for Sun disklabels up to 2005) (see [[#PID BFh|BFh]]) | ||||||
83h | File system | Linux | Linux | Any native Linux file system (see [[#PID 93h|93h]], corresponds with [[#PID 43h|43h]]) | ||||
| 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 file system, corresponds with [[#PID 63h|63h]]) | |||||
84h | Hibernation | Microsoft | ? | APM hibernation (suspend to disk, S2D) | ||||
| Hidden FS | IBM | OS/2 | Hidden C: (FAT16)(corresponds to either 04h or 06h) | |||||
| Hibernation | Intel | Rapid Start technology | Rapid Start hibernation data (possibly iFFS; possibly used for Intel SRT SSD cache as well) | |||||
85h | , AAP | Container | Linux | Linux | Linux extended (corresponds with [[#PID 05h|05h]]) | |||
86h | File system | Microsoft | Windows NT 4 Server | Fault-tolerant FAT16B mirrored volume set (see [[#PID B6h|B6h]] and [[#PID C6h|C6h]], corresponds with [[#PID 06h|06h]]) | ||||
| Service | Linux | Linux | Linux RAID superblock with auto-detect (old) (see [[#PID FDh|FDh]]) | |||||
87h | File system | Microsoft | Windows NT 4 Server | Fault-tolerant HPFS/NTFS mirrored volume set (see [[#PID B7h|B7h]] and [[#PID C7h|C7h]], corresponds with [[#PID 07h|07h]]) | ||||
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[9] | ||||
8Bh | File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set (see [[#PID BBh|BBh]] and [[#PID CBh|CBh]], corresponds with [[#PID 0Bh|0Bh]]) | ||||
8Ch | File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set (see [[#PID BCh|BCh]] and [[#PID CCh|CCh]], corresponds with [[#PID 0Ch|0Ch]]) | ||||
8Dh | MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | Hidden FAT12 (corresponds with [[#PID 01h|01h]]) | |||
8Eh | Container | Linux | Linux | Linux LVM since 1999 (see [[#PID FEh|FEh]]) | ||||
90h | MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with [[#PID 04h|04h]]) | |
91h | MBR, EBR | CHS, LBA | , AAP | Hidden container | FreeDOS | Free FDISK | Hidden extended partition with CHS addressing (corresponds with [[#PID 05h|05h]]) | |
92h | MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16B (corresponds with [[#PID 06h|06h]]) | |
93h | File system | Andrew S. Tanenbaum | Amoeba native file system | |||||
| Hidden FS | Linux | Hidden Linux file system (see [[#PID 83h|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 | ||||
97h | MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT32 (corresponds with [[#PID 0Bh|0Bh]]) | |
98h | MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT32 (corresponds with [[#PID 0Ch|0Ch]]) | |
| MBR | CHS, LBA | x86 | Service FS | Datalight | ROM-DOS | Service partition (bootable FAT) ROM-DOS SuperBoot (see [[#PID 12h|12h]]) | ||
| MBR | CHS, LBA | x86 | Service FS | Intel | ? | Service partition (bootable FAT) (see [[#PID 12h|12h]]) | ||
99h | File system | ? | ? | Early Unix | ||||
9Ah | MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 (corresponds with [[#PID 0Eh|0Eh]]) | |
9Bh | MBR, EBR | LBA | , AAP | Hidden container | FreeDOS | Free FDISK | Hidden extended partition with LBA (corresponds with [[#PID 0Fh|0Fh]]) | |
9Eh | File system | Andy Valencia | ||||||
| File system | Andy Valencia | ForthOS | ForthOS (eForth port)[10] | |||||
9Fh | ? | ? | BSD/OS 3.0+, BSDI | (see [[#PID B7h|B7h]] and [[#PID B8h|B8h]]) | ||||
A0h | MBR | Service FS | ? | Diagnostic partition for HP laptops | ||||
| Hibernation | Phoenix, IBM, Toshiba, Sony | ? | Hibernate partition | |||||
| AiR-BOOT | AiR-BOOT (see [[#PID 8Ah|8Ah]]) --> | |||||||
A1h | ? | Hewlett-Packard | HP Volume Expansion | |||||
| Hibernation | Phoenix, NEC | ? | Hibernate partition | |||||
A2h | MBR | CHS, LBA | ARM | Image | Cyclone V | Hard Processor System (HPS) ARM preloader | ||
A3h | ? | Hewlett-Packard | HP Volume Expansion | |||||
A4h | ? | Hewlett-Packard | HP Volume Expansion | |||||
A5h | MBR | Container | BSD | BSD slice (BSD/386, 386BSD, NetBSD (before 1998-02-19), FreeBSD) | ||||
A6h | ? | Hewlett-Packard | HP Volume Expansion | |||||
| MBR | Container | OpenBSD | OpenBSD slice | |||||
A7h | 386 | File system | NeXTSTEP | |||||
A8h | File system | Darwin, Mac OS X | Apple Darwin, Mac OS X UFS | |||||
A9h | MBR | Container | NetBSD | NetBSD slice | ||||
AAh | MBR | CHS | ? | File system | MS-DOS | Olivetti MS-DOS FAT12 (1.44 MB) (corresponds with [[#PID 06h|06h]]) | ||
ABh | Service | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X boot | ||||
| File system | Stanislav Karchebny | GO! OS | GO! | |||||
ACh | Service | Apple | Darwin, Mac OS X | Apple RAID, Mac OS X RAID | ||||
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+ | |||
| Swap | Frank Barrus | ShagOS | ShagOS swap | |||||
B0h | MBR | CHS, LBA | x86 | Blocker | Star-Tools | Boot-Star | Boot-Star dummy partition | |
B1h | ? | HP Volume Expansion | ||||||
| File system | QNX 6.x | QNX Neutrino power-safe file system | ||||||
B2h | File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system | ||||
B3h | ? | HP Volume Expansion | ||||||
| File system | QNX Software Systems | QNX 6.x | QNX Neutrino power-safe file system | |||||
B4h | ? | Hewlett-Packard | HP Volume Expansion | |||||
B6h | ? | Hewlett-Packard | HP Volume Expansion | |||||
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored master volume (see [[#PID C6h|C6h]] and [[#PID 86h|86h]], corresponds with [[#PID 06h|06h]]) | ||||
B7h | File system | BSDI (before 3.0) | BSDI native file system / swap (see [[#PID B8h|B8h]] and [[#PID 9Fh|9Fh]]) | |||||
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant HPFS/NTFS mirrored master volume (see [[#PID C7h|C7h]] and [[#PID 87h|87h]], corresponds with [[#PID 07h|07h]]) | ||||
B8h | File system | BSDI (before 3.0) | BSDI swap / native file system (see [[#PID B7h|B7h]] and [[#PID 9Fh|9Fh]]) | |||||
BBh | Hidden FS | PTS BootWizard 4 / OS Selector 5 for hidden partitions other than [[#PID 01h|01h]], [[#PID 04h|04h]], [[#PID 06h|06h]], [[#PID 07h|07h]], [[#PID 0Bh|0Bh]], [[#PID 0Ch|0Ch]], [[#PID 0Eh|0Eh]] and unformatted partitions | ||||||
| MBR | Service FS | Acronis | OEM Secure Zone (corresponds to [[#PID BCh|BCh]]) | |||||
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored master volume (see [[#PID CBh|CBh]] and [[#PID 8Bh|8Bh]], corresponds with [[#PID 0Bh|0Bh]]) | ||||
BCh | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored master volume (see [[#PID CCh|CCh]] and [[#PID 8Ch|8Ch]], corresponds with [[#PID 0Ch|0Ch]]) | |||
| MBR | LBA | Service FS | Acronis | Acronis True Image | Acronis Secure Zone | |||
| MBR, EBR | Service FS | Backup Capsule | Backup Capsule | |||||
BDh | File system | ? | BonnyDOS/286 | |||||
BEh | File system | Solaris 8 | Solaris 8 boot | |||||
BFh | x86 | Container | Sun Microsystems | Solaris | Solaris x86 (for Sun disklabels, since 2005) (see [[#PID 82h|82h]]) | |||
C0h | MBR | CHS, LBA | x86 | Secured container | Secured FAT partition (smaller than 32 MB) | |||
C1h | MBR, EBR | CHS, LBA | x86 | Secured FS | DR DOS 6.0+ | Secured FAT12 (corresponds with [[#PID 01h|01h]]) | ||
C2h | Hidden FS | BlueSky Innovations | Power Boot | Hidden Linux native file system | ||||
C3h | 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 [[#PID 04h|04h]]) | |
C5h | MBR, EBR | CHS, LBA | , AAP | Secured container | Digital Research | DR DOS 6.0+ | Secured extended partition with CHS addressing (corresponds with [[#PID 05h|05h]]) | |
C6h | MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16B (corresponds with [[#PID 06h|06h]]) | |
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored slave volume (see [[#PID B6h|B6h]] and [[#PID 86h|86h]], corresponds with [[#PID 06h|06h]]) | ||||
C7h | MBR | File system | Syrinx | Syrinx boot | ||||
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant HPFS/NTFS mirrored slave volume (see [[#PID B7h|B7h]] and [[#PID 87h|87h]], corresponds with [[#PID 07h|07h]]) | ||||
C8h | ? | Reserved for DR-DOS since 1997 | ||||||
C9h | ? | Reserved for DR-DOS since 1997 | ||||||
CAh | ? | Reserved for DR-DOS since 1997 | ||||||
CBh | MBR, EBR | CHS, LBA | x86 | Secured FS | DR-DOS 7.0x | Secured FAT32 (corresponds with [[#PID 0Bh|0Bh]]) | ||
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored slave volume (see [[#PID BBh|BBh]] and [[#PID 8Bh|8Bh]], corresponds with [[#PID 0Bh|0Bh]]) | ||||
CCh | MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT32 (corresponds with [[#PID 0Ch|0Ch]]) | |
| EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored slave volume (see [[#PID BCh|BCh]] and [[#PID 8Ch|8Ch]], corresponds with [[#PID 0Ch|0Ch]]) | ||||
CDh | Service | Convergent Technologies, Unisys | CTOS | Memory dump (see [[#PID DDh|DDh]] and [[#PID DBh|DBh]]) | ||||
| MBR | LBA | x86 | File system | Linux | openSUSE ISOHybrid ISO9660 partition (from openSUSE Leap "Live" x86 images) | |||
CEh | MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT16B (corresponds with [[#PID 0Eh|0Eh]]) | |
CFh | MBR, EBR | LBA | , AAP | Secured container | Caldera | DR-DOS 7.0x | Secured extended partition with LBA (corresponds with [[#PID 0Fh|0Fh]]) | |
D0h | MBR | CHS, LBA | 386 | Secured container | Multiuser DOS, REAL/32 | Secured FAT partition (larger than 32 MB) | ||
D1h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT12 (corresponds with [[#PID 01h|01h]]) | |
D4h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16 (corresponds with [[#PID 04h|04h]]) | |
D5h | MBR, EBR | CHS | Secured container | Novell | Multiuser DOS | Secured extended partition with CHS addressing (corresponds with [[#PID 05h|05h]]) | ||
D6h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16B (corresponds with [[#PID 06h|06h]]) | |
D8h | MBR | CHS | File system | CP/M-86 | CP/M-86 (see [[#PID DBh|DBh]]) | |||
DAh | Service | John Hardin | Non-file system data | |||||
| Secured FS | Powercopy Backup | Shielded disk | ||||||
DBh | MBR | CHS | x86 | File system | (see [[#PID D8h|D8h]]) | |||
| ? | ? (see [[#PID CDh|CDh]] and [[#PID DDh|DDh]]) | |||||||
| x86 | Service | KDG Telemetry | D800 | boot image for x86 supervisor CPU (SCPU) module | ||||
| MBR | CHS, LBA | x86 | Service FS | FAT32 system restore partition (DSR) (see [[#PID DEh|DEh]]) | ||||
DDh | Service | Convergent Technologies, Unisys | CTOS | Hidden memory dump (see [[#PID CDh|CDh]] and [[#PID DBh|DBh]]) | ||||
DEh | MBR | CHS, LBA | x86 | Hidden FS | FAT16 utility/diagnostic partition[11] | |||
DFh | ? | DG/UX virtual disk manager | ||||||
| MBR | Blocker | EMBRM | ||||||
| ? | ? | Aviion | ||||||
E0h | File system | ST AVFS | ||||||
E1h | MBR | CHS | File system | FAT12 (≤16 MB) (corresponds to [[#PID 01h|01h]]) | ||||
E3h | File system | Read-only FAT12 (corresponds to [[#PID E1h|E1h]]) | ||||||
E4h | MBR | CHS | File system | FAT16 (≤32 MB) (corresponds to [[#PID 04h|04h]]) | ||||
E5h | MBR | CHS | x86 | File system | Tandy MS-DOS | Logical sectored FAT12 or FAT16 | ||
E6h | File System | Read-only FAT16 (corresponds to [[#PID E4h|E4h]]) | ||||||
E8h | MBR, EBR | CHS, LBA | Service | Linux | Linux Unified Key Setup | |||
EBh | 386 | File system | BFS (see [[#PID 2Ah|2Ah]] and [[#PID 2Bh|2Bh]]) | |||||
ECh | File system | Robert Szeleney | SkyFS | |||||
EDh | MBR, EBR | CHS, LBA | x86 | Service | Matthias R. Paul | Sprytix | EDC loader | |
| MBR | CHS, LBA | x86 | EFI | Was proposed for GPT hybrid MBR[12] | ||||
EEh | MBR | Blocker | GPT protective MBR (see [[#PID EFh|EFh]]) | |||||
EFh | MBR | Service FS | EFI | EFI system partition. Can be a FAT12, FAT16, FAT32 (or other) file system (see [[#PID EEh|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 MS-DOS 3.x, Unisys MS-DOS 3.3, Digital Research DOS Plus 2.1 | Logical sectored FAT12 or FAT16 secondary partition | ||
F4h | MBR | CHS | File system | FAT16B (corresponds to [[#PID 06h|06h]]) | ||||
| 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 | Read-only FAT16B (corresponds to [[#PID F4h|F4h]]) | |||||
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 | Protective partition for the area containing system firmware | |||
F9h | Cache | ALC Press | Linux | pCache ext2/ext3 persistent cache | ||||
FBh | File system | VMware VMFS file system partition | ||||||
FCh | Swap | VMware | VMware ESX | VMware swap / VMKCORE kernel dump partition | ||||
FDh | Service | Linux | Linux | Linux RAID superblock with auto-detect (see [[#PID 86h|86h]]) | ||||
FEh | Service | IBM | PS/2 | PS/2 IML partition | ||||
| MBR | CHS, LBA | x86 | Service FS | IBM | PS/2 | PS/2 recovery partition (FAT12 reference disk floppy image), (corresponds with [[#PID 01h|01h]] if activated, all other partitions +10h then) | ||
| Service | Linux | Linux | Old Linux LVM (see [[#PID 8Eh|8Eh]]) | |||||
FFh | MBR | CHS | Service | XENIX | XENIX bad block table (see [[#PID 02h|02h]] and [[#PID 03h|03h]]) |
[13] [14] [15] [16] [17] [18] [19] [20] [21] [22]
[[#PID 0Ah|0Ah]], [[#PID 11h|11h]], [[#PID 14h|14h]], [[#PID 15h|15h]], [[#PID 16h|16h]], [[#PID 17h|17h]], [[#PID 1Bh|1Bh]], [[#PID 1Ch|1Ch]], [[#PID 1Eh|1Eh]], [[#PID 1Fh|1Fh]].[[#PID 8Dh|8Dh]], [[#PID 90h|90h]], [[#PID 91h|91h]], [[#PID 92h|92h]], [[#PID 97h|97h]], [[#PID 98h|98h]], [[#PID 9Ah|9Ah]], [[#PID 9Bh|9Bh]].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.[[#PID C0h|C0h]], [[#PID C1h|C1h]], [[#PID C4h|C4h]], [[#PID C5h|C5h]], [[#PID C6h|C6h]], [[#PID CBh|CBh]], [[#PID CCh|CCh]], [[#PID CEh|CEh]], [[#PID CFh|CFh]].[[#PID D0h|D0h]], [[#PID D1h|D1h]], [[#PID D4h|D4h]], [[#PID D5h|D5h]], [[#PID D6h|D6h]].[[#PID C0h|C0h]] and [[#PID D0h|D0h]] for multi-user security.