Partition type (original) (raw)
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](#PID%5F7Fh) 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
N/a
No
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 [06h](#PID%5F06h) instead)[3][4][5]
02h
MBR
CHS
x86, 68000, Z8000, PDP-11
File system
XENIX root (see [03h](#PID%5F03h) and [FFh](#PID%5FFFh))[3]
03h
MBR
CHS
No
File system
Microsoft, SCO
XENIX
XENIX usr (see [02h](#PID%5F02h) and [FFh](#PID%5FFFh))[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](#PID%5F06h) 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](#PID%5F0Fh) instead (see [0Fh](#PID%5F0Fh), [85h](#PID%5F85h), [C5h](#PID%5FC5h), [D5h](#PID%5FD5h))[3][4][5]
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 [0Fh](#PID%5F0Fh) extended partition (else use [0Eh](#PID%5F0Eh) 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+
MBR, EBR
CHS, LBA
286
File system
IBM
OS/2 1.2+, Windows NT
MBR, EBR
CHS, LBA
386
File system
Microsoft
MBR, EBR
CHS, LBA
Yes
File system
Microsoft
File system
QNX 2
QNX "qnx" (7) (pre-1988 only)[6][nb 2]
08h
MBR
CHS
x86
File system
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 boot/split
File system
Quantum Software Systems
QNX 1.x/2.x
Container
Partition spanning multiple drives
09h
File system
IBM
AIX
AIX data/boot
File system
Quantum Software Systems
QNX 1.x/2.x
MBR
CHS
286
File system
Coherent file system
MBR
File system
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+
0Eh
MBR, EBR
LBA
x86
File system
Microsoft
DOS 7.0+
0Fh
MBR, EBR
LBA
No, AAP
Container
Microsoft
DOS 7.0+
Extended partition with LBA (see [05h](#PID%5F05h) and [CFh](#PID%5FCFh))[4][5]
11h
MBR
CHS
x86
File system
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](#PID%5F01h))[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
EISA machines
EISA configuration utility for the system[4][5]
Hibernation
Compaq
Hibernation partition[7]
MBR
x86
Service FS
Diagnostics and firmware partition (bootable FAT)[7]
MBR
x86
Service FS
Service partition (bootable FAT)[7] (see [98h](#PID%5F98h))
Service FS
IBM
Rescue and Recovery partition[7]
14h
File system
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](#PID%5F04h))[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](#PID%5F05h))[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](#PID%5F06h))[nb 4]
17h
Hidden FS
IBM
OS/2 Boot Manager
Hidden IFS (corresponds with [07h](#PID%5F07h))[nb 4]
Hidden HPFS (corresponds with [07h](#PID%5F07h))[nb 4]
Hidden NTFS (corresponds with [07h](#PID%5F07h))[nb 4]
Hidden exFAT (corresponds with [07h](#PID%5F07h))[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](#PID%5F20h))
1Bh
Hidden FS
IBM
OS/2 Boot Manager
Hidden FAT32 (corresponds with [0Bh](#PID%5F0Bh))[nb 4]
1Ch
Hidden FS
IBM
OS/2 Boot Manager
Hidden FAT32 with LBA (corresponds with [0Ch](#PID%5F0Ch))[nb 4]
Service FS
ASUS
ASUS eRecovery
ASUS recovery partition (Hidden FAT32 with LBA, see [0Ch](#PID%5F0Ch))[10]
1Eh
Hidden FS
IBM
OS/2 Boot Manager
Hidden FAT16 with LBA (corresponds with [0Eh](#PID%5F0Eh))[nb 4]
1Fh
MBR, EBR
LBA
Hidden container
IBM
OS/2 Boot Manager
Hidden extended partition with LBA addressing (corresponds with [0Fh](#PID%5F0Fh))[nb 4]
20h
?
File system
Microsoft
Windows Mobile update XIP
File system
Willow Schlanger
Willowsoft Overture File System (OFS1) (see [19h](#PID%5F19h))
21h
MBR
?
HP Volume Expansion
File system
Dave Poirier
Oxygen
FSo2 (Oxygen File System) (see [22h](#PID%5F22h))
22h
Container
Dave Poirier
Oxygen
Oxygen Extended Partition Table (see [21h](#PID%5F21h))
23h
Yes
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[11][nb 3] (see NEC MBR)
27h
Service FS
Windows
Windows Recovery Environment (RE) partition (hidden NTFS partition type [07h](#PID%5F07h))[12]
MBR
LBA
Yes
Service FS
D2D eRecovery
Rescue partition (Hidden NTFS labeled "PQService", corresponds to [07h](#PID%5F07h))
Yes
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 [2Bh](#PID%5F2Bh) and [EBh](#PID%5FEBh))
MBR, EBR
LBA
x86
File system
Reserved (see [CAh](#PID%5FCAh))
2Bh
File system
Kristian van der Vliet
SyllableSecure (SylStor), a variant of AthFS (an extension of BFS, see [2Ah](#PID%5F2Ah) and [EBh](#PID%5FEBh))
30h
MBR
CHS
x86
File system
Found in some OEM Siemens systems instead of [DBh](#PID%5FDBh).[13] Filesystem parameters are in the following sector (LBA 1), not the partition itself.
31h
Microsoft, IBM
Reserved
32h
MBR
Yes
Container
Alien Internet Services
nOS
Used as a container for nOS partitions (kernel and driver caching, user file storage, swap, etc.)[14][15][16]
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 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)[17]
3Dh
Hidden FS
PowerQuest
PartitionMagic
Hidden NetWare
40h
PICK Systems
PICK R83
Venix 80286
41h
Yes
Personal RISC
Personal RISC Boot
Linux
Old Linux/Minix (disk shared with DR DOS 6.0) (corresponds with [81h](#PID%5F81h))
PowerPC
PowerPC
PowerPC
PPC PReP (Power PC Reference Platform) Boot
42h
Secured FS
SFS
Secure File system (SFS)
No
Linux
Linux
Old Linux swap (disk shared with DR DOS 6.0) (corresponds with [82h](#PID%5F82h))
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](#PID%5F83h))
44h
Wildfile
Norton GoBack, WildFile GoBack, Adaptec GoBack, Roxio GoBack
45h
CHS
Priam (see also [5Ch](#PID%5F5Ch))
MBR
CHS
Yes
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
Yes
Nick Roberts
AdaOS
Aquila (see [7Fh](#PID%5F7Fh))
MBR, EBR
CHS, LBA
No
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)[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
Read-only partition (old)
Lynx RTOS
Novell
51h
Novell
No
Ontrack
Disk Manager 4-6
Read-write partition (Aux 1)
52h
MBR
CHS
File system
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[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 Partitioned Volume (see also [45h](#PID%5F45h))
61h
MBR
CHS
Hidden FS
Hidden FAT12 (corresponds to [E1h](#PID%5FE1h))[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
GNU/Hurd
Old GNU/Hurd with UFS[18] support (corresponds with [83h](#PID%5F83h))
MBR
CHS
Hidden FS
Hidden read-only FAT12 (corresponds to [E3h](#PID%5FE3h))[nb 6]
64h
?
Hidden FAT16 (corresponds to [E4h](#PID%5FE4h))[nb 6]
File system
Secured FS
Solomon
PC-ARMOUR
65h
File system
Novell
NetWare
66h
?
Novell
NetWare
Storage Management Services (SMS)
MBR
CHS
Hidden FS
Hidden read-only FAT16 (corresponds to [E6h](#PID%5FE6h))[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
BSD
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](#PID%5F01h))
File system
Nordier
Unix V7/x86
V7/x86
73h
Microsoft, IBM
Reserved
74h
MBR
CHS
Hidden FS
Hidden FAT16B (corresponds to [F4h](#PID%5FF4h))[nb 6]
75h
File system
IBM
76h
Hidden read-only FAT16B (corresponds to [F6h](#PID%5FF6h))[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](#PID%5F04h))
7Ah
MBR, EBR
LBA
x86
Policy FS
APTI conformant systems
APTI alternative FAT16 (LBA, SFN) (corresponds with [0Eh](#PID%5F0Eh))
7Bh
MBR, EBR
CHS
x86
Policy FS
APTI conformant systems
APTI alternative FAT16B (CHS, SFN) (corresponds with [06h](#PID%5F06h))
7Ch
MBR, EBR
LBA
x86
Policy FS
APTI conformant systems
APTI alternative FAT32 (LBA, SFN) (corresponds with [0Ch](#PID%5F0Ch))
7Dh
MBR, EBR
CHS
x86
Policy FS
APTI conformant systems
APTI alternative FAT32 (CHS, SFN) (corresponds with [0Bh](#PID%5F0Bh))
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
Minix 1.1-1.4a
MINIX file system (old)
81h
File system
Andrew Tanenbaum
Minix 1.4b+
MINIX file system (corresponds with [41h](#PID%5F41h))
82h
No
Swap
Linux
Linux
Linux swap space (corresponds with [42h](#PID%5F42h))
No
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 [BFh](#PID%5FBFh))
83h
Yes
File system
Linux
Linux
Any native Linux file system (see [93h](#PID%5F93h), corresponds with [43h](#PID%5F43h))
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[18] file system, corresponds with [63h](#PID%5F63h))
84h
No
Hibernation
Microsoft
?
APM hibernation (suspend to disk, S2D)[5][7][21]
Hidden FS
IBM
OS/2
Hidden C: (FAT16)(corresponds to either 04h or 06h)
Hibernation
Intel
Rapid Start technology
Rapid Start hibernation data[22] (possibly iFFS; possibly used for Intel SRT SSD cache as well)
85h
No, AAP
Container
Linux
Linux
Linux extended[23] (corresponds with [05h](#PID%5F05h))
86h
File system
Microsoft
Windows NT 4 Server
Fault-tolerant FAT16B mirrored volume set (see [B6h](#PID%5FB6h) and [C6h](#PID%5FC6h), corresponds with [06h](#PID%5F06h))[4][5]
Service
Linux
Linux
Linux RAID superblock with auto-detect (old) (see [FDh](#PID%5FFDh))[_citation needed_]
87h
File system
Microsoft
Windows NT 4 Server
Fault-tolerant HPFS/NTFS mirrored volume set (see [B7h](#PID%5FB7h) and [C7h](#PID%5FC7h), corresponds with [07h](#PID%5F07h))[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[24]
8Bh
File system
Microsoft
Windows NT 4 Server
Legacy fault-tolerant FAT32 mirrored volume set (see [BBh](#PID%5FBBh) and [CBh](#PID%5FCBh), corresponds with [0Bh](#PID%5F0Bh))[4]
8Ch
File system
Microsoft
Windows NT 4 Server
Legacy fault-tolerant FAT32 mirrored volume set (see [BCh](#PID%5FBCh) and [CCh](#PID%5FCCh), corresponds with [0Ch](#PID%5F0Ch))[4]
8Dh
MBR, EBR
CHS, LBA
x86, 68000, 8080/Z80
Hidden FS
Free FDISK
Hidden FAT12 (corresponds with [01h](#PID%5F01h))[nb 7]
8Eh
Container
Linux
Linux
Linux LVM since 1999 (see [FEh](#PID%5FFEh))[_citation needed_]
90h
MBR, EBR
CHS, LBA
x86, 68000, 8080/Z80
Hidden FS
FreeDOS
Free FDISK
Hidden FAT16 (corresponds with [04h](#PID%5F04h))[nb 7]
91h
MBR, EBR
CHS, LBA
No, AAP
Hidden container
FreeDOS
Free FDISK
Hidden extended partition with CHS addressing (corresponds with [05h](#PID%5F05h))[nb 7]
92h
MBR, EBR
CHS, LBA
x86
Hidden FS
FreeDOS
Free FDISK
Hidden FAT16B (corresponds with [06h](#PID%5F06h))[nb 7]
93h
File system
Amoeba native file system
Hidden FS
Linux
Hidden Linux file system (see [83h](#PID%5F83h))
94h
Service
Andrew S. Tanenbaum
Amoeba
Amoeba bad block table
95h
File system
MIT
EXOPC
EXOPC native
96h
File system
?
CHRP
97h
MBR, EBR
CHS, LBA
x86
Hidden FS
FreeDOS
Free FDISK
Hidden FAT32 (corresponds with [0Bh](#PID%5F0Bh))[nb 7]
98h
MBR, EBR
LBA
x86
Hidden FS
FreeDOS
Free FDISK
Hidden FAT32 (corresponds with [0Ch](#PID%5F0Ch))[nb 7]
MBR
CHS, LBA
x86
Service FS
Datalight
ROM-DOS
Service partition (bootable FAT) ROM-DOS SuperBoot (see [12h](#PID%5F12h))
MBR
CHS, LBA
x86
Service FS
Intel
?
Service partition (bootable FAT)[7] (see [12h](#PID%5F12h))
99h
File system
?
?
Early Unix[_citation needed_]
9Ah
MBR, EBR
LBA
x86
Hidden FS
FreeDOS
Free FDISK
Hidden FAT16 (corresponds with [0Eh](#PID%5F0Eh))[nb 7]
9Bh
MBR, EBR
LBA
No, AAP
Hidden container
FreeDOS
Free FDISK
Hidden extended partition with LBA (corresponds with [0Fh](#PID%5F0Fh))[nb 7]
9Eh
File system
Andy Valencia
[_citation needed_]
File system
Andy Valencia
ForthOS
ForthOS (eForth port)[26]
9Fh
?
?
BSD/OS 3.0+, BSDI
(see [B7h](#PID%5FB7h) and [B8h](#PID%5FB8h))
A0h
MBR
Service FS
?
Diagnostic partition for HP laptops[7]
Hibernation
Phoenix, IBM, Toshiba, Sony
?
Hibernate partition[5]
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[27]
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)[28]
A6h
?
Hewlett-Packard
HP Volume Expansion
MBR
Container
OpenBSD
A7h
386
File system
NeXTSTEP
[_citation needed_]
A8h
File system
Darwin, Mac OS X
Apple Darwin, Mac OS X UFS[nb 8]
A9h
MBR
Container
NetBSD
AAh
MBR
CHS
?
File system
MS-DOS
Olivetti MS-DOS FAT12 (1.44 MB) (corresponds with [06h](#PID%5F06h))
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
No
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[nb 2]
B2h
File system
QNX Software Systems
QNX 6.x
QNX Neutrino power-safe file system[nb 2]
B3h
?
HP Volume Expansion
File system
QNX Software Systems
QNX 6.x
QNX Neutrino power-safe file system[nb 2]
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 [C6h](#PID%5FC6h) and [86h](#PID%5F86h), corresponds with [06h](#PID%5F06h))
B7h
File system
BSDI (before 3.0)
BSDI native file system / swap (see [B8h](#PID%5FB8h) and [9Fh](#PID%5F9Fh))
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant HPFS/NTFS mirrored master volume (see [C7h](#PID%5FC7h) and [87h](#PID%5F87h), corresponds with [07h](#PID%5F07h))
B8h
File system
BSDI (before 3.0)
BSDI swap / native file system (see [B7h](#PID%5FB7h) and [9Fh](#PID%5F9Fh))
BBh
Hidden FS
BootWizard, OS Selector
PTS BootWizard 4 / OS Selector 5 for hidden partitions other than [01h](#PID%5F01h), [04h](#PID%5F04h), [06h](#PID%5F06h), [07h](#PID%5F07h), [0Bh](#PID%5F0Bh), [0Ch](#PID%5F0Ch), [0Eh](#PID%5F0Eh) and unformatted partitions
MBR
Service FS
Acronis
OEM Secure Zone (corresponds to [BCh](#PID%5FBCh))
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant FAT32 mirrored master volume (see [CBh](#PID%5FCBh) and [8Bh](#PID%5F8Bh), corresponds with [0Bh](#PID%5F0Bh))
BCh
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant FAT32 mirrored master volume (see [CCh](#PID%5FCCh) and [8Ch](#PID%5F8Ch), corresponds with [0Ch](#PID%5F0Ch))
MBR
LBA
Service FS
Acronis
Acronis True Image
MBR, EBR
Service FS
Backup Capsule
Backup Capsule[_citation needed_]
BDh
File system
?
BonnyDOS/286
[_citation needed_]
BEh
Yes
File system
Solaris 8
Solaris 8 boot
BFh
x86
Container
Sun Microsystems
Solaris
Solaris x86 (for Sun disklabels, since 2005) (see [82h](#PID%5F82h))
C0h
MBR
CHS, LBA
x86
Secured container
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
DR DOS 6.0+
Secured FAT12 (corresponds with [01h](#PID%5F01h))[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](#PID%5F04h))[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](#PID%5F05h))[nb 9]
C6h
MBR, EBR
CHS, LBA
x86
Secured FS
Digital Research
DR DOS 6.0+
Secured FAT16B (corresponds with [06h](#PID%5F06h))[nb 9]
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant FAT16B mirrored slave volume (see [B6h](#PID%5FB6h) and [86h](#PID%5F86h), corresponds with [06h](#PID%5F06h))
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](#PID%5FB7h) and [87h](#PID%5F87h), corresponds with [07h](#PID%5F07h))
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
DR-DOS 7.0x
Secured FAT32 (corresponds with [0Bh](#PID%5F0Bh))[nb 9]
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant FAT32 mirrored slave volume (see [BBh](#PID%5FBBh) and [8Bh](#PID%5F8Bh), corresponds with [0Bh](#PID%5F0Bh))
CCh
MBR, EBR
LBA
x86
Secured FS
Caldera
DR-DOS 7.0x
Secured FAT32 (corresponds with [0Ch](#PID%5F0Ch))[nb 9]
EBR
File system
Microsoft
Windows NT 4 Server
Corrupted fault-tolerant FAT32 mirrored slave volume (see [BCh](#PID%5FBCh) and [8Ch](#PID%5F8Ch), corresponds with [0Ch](#PID%5F0Ch))
CDh
No
Service
Convergent Technologies, Unisys
CTOS
Memory dump (see [DDh](#PID%5FDDh) and [DBh](#PID%5FDBh))
MBR
LBA
x86
File system
Linux
openSUSE ISOHybrid ISO9660 partition (from openSUSE Leap "Live" x86 images)[30]
CEh
MBR, EBR
LBA
x86
Secured FS
Caldera
DR-DOS 7.0x
Secured FAT16B (corresponds with [0Eh](#PID%5F0Eh))[nb 9]
CFh
MBR, EBR
LBA
No, AAP
Secured container
Caldera
DR-DOS 7.0x
Secured extended partition with LBA (corresponds with [0Fh](#PID%5F0Fh))[nb 9]
D0h
MBR
CHS, LBA
386
Secured container
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](#PID%5F01h))[nb 11]
D4h
MBR, EBR
CHS
386
Secured FS
Novell
Multiuser DOS
Secured FAT16 (corresponds with [04h](#PID%5F04h))[nb 11]
D5h
MBR, EBR
CHS
No
Secured container
Novell
Multiuser DOS
Secured extended partition with CHS addressing (corresponds with [05h](#PID%5F05h))[nb 11]
D6h
MBR, EBR
CHS
386
Secured FS
Novell
Multiuser DOS
Secured FAT16B (corresponds with [06h](#PID%5F06h))[nb 11]
D8h
MBR
CHS
File system
CP/M-86
CP/M-86 (see [DBh](#PID%5FDBh))[_citation needed_]
DAh
No
Service
John Hardin
Non-file system data
Secured FS
Powercopy Backup
Shielded disk
DBh
MBR
CHS
x86
File system
CP/M-86, Concurrent CP/M-86, Concurrent DOS
[13] (see [D8h](#PID%5FD8h))[3]
?
Convergent Technologies, Unisys
? (see [CDh](#PID%5FCDh) and [DDh](#PID%5FDDh))[_citation needed_]
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 [DEh](#PID%5FDEh))
DDh
No
Service
Convergent Technologies, Unisys
CTOS
Hidden memory dump (see [CDh](#PID%5FCDh) and [DBh](#PID%5FDBh))
DEh
MBR
CHS, LBA
x86
Hidden FS
FAT16 utility/diagnostic partition[5][7][31]
DFh
?
DG/UX virtual disk manager[_citation needed_]
MBR
Blocker
EMBRM[_citation needed_]
?
?
Aviion
[_citation needed_]
E0h
File system
ST AVFS
E1h
MBR
CHS
File system
FAT12 (≤16 MB) (corresponds to [01h](#PID%5F01h))[nb 6]
E3h
File system
Read-only FAT12 (corresponds to [E1h](#PID%5FE1h))[nb 6]
E4h
MBR
CHS
File system
FAT16 (≤32 MB) (corresponds to [04h](#PID%5F04h))[nb 6]
E5h
MBR
CHS
x86
File system
Tandy MS-DOS
Logical sectored FAT12 or FAT16[nb 3]
E6h
File System
Read-only FAT16 (corresponds to [E4h](#PID%5FE4h))[nb 6]
E8h
MBR, EBR
CHS, LBA
No
Service
Linux
Linux Unified Key Setup[32]
EBh
386
File system
BFS (see [2Ah](#PID%5F2Ah) and [2Bh](#PID%5F2Bh))
ECh
File system
Robert Szeleney
EDh
MBR, EBR
CHS, LBA
x86
Service
Matthias R. Paul
Sprytix
EDC loader
MBR
CHS, LBA
x86
EFI
Was proposed for GPT hybrid MBR[nb 12]
EEh
MBR
No
Blocker
GPT protective MBR[1][5] (see [EFh](#PID%5FEFh))
EFh
MBR
Service FS
EFI
EFI system partition. Can be a FAT12, FAT16, FAT32 (or other) file system[5] (see [EEh](#PID%5FEEh))
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
FAT16B (corresponds to [06h](#PID%5F06h))[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
Read-only FAT16B (corresponds to [F4h](#PID%5FF4h))[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 [33]
Protective partition for the area containing system firmware
F9h
Cache
ALC Press
Linux
pCache ext2/ext3 persistent cache[34]
FBh
No
File system
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](#PID%5F86h))
FEh
Service
IBM
PS/2
MBR
CHS, LBA
x86
Service FS
IBM
PS/2
PS/2 recovery partition (FAT12 reference disk floppy image), (corresponds with [01h](#PID%5F01h) if activated, all other partitions +10h then)[5]
Service
Linux
Linux
Old Linux LVM (see [8Eh](#PID%5F8Eh))
FFh
MBR
CHS
No
Service
XENIX
XENIX bad block table (see [02h](#PID%5F02h) and [03h](#PID%5F03h))[3]