Partition type
The partition type in a partition's entry in the partition table inside a master boot record is a byte value intended to specify the file system the partition contains and/or to flag special access methods used to access these partitions.
Overview
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 conflictive double-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 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.
While not officially maintained, new assignments should be coordinated, in particular any new 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 initiative since 2002.
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.
List of partition IDs
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 | - |
| 02h | MBR | CHS | x86, 68000, Z8000, PDP-11 | File system | Microsoft, SCO | XENIX | XENIX root | - |
| 03h | MBR | CHS | No | File system | Microsoft, SCO | XENIX | XENIX usr | - |
| 04h | MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | File system | Microsoft | DOS 3.0+ | FAT16 with less than 65536 sectors. As primary partition it must reside in first physical 32 MB of disk, or as logical drive anywhere on disk. | - |
| 05h | MBR, EBR | CHS, | 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 | - |
| 06h | MBR, EBR | CHS, LBA | x86 | File system | Compaq | DOS 3.31+ | FAT16B with 65536 or more sectors. It must reside within the first 8 GB of disk unless used for logical drives in an 0Fh extended partition. 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 | - |
| 07h | MBR, EBR | CHS, LBA | 286 | File system | IBM | OS/2 1.2+, Windows NT | HPFS | - |
| 07h | MBR, EBR | CHS, LBA | 386 | File system | Microsoft | Windows NT | NTFS | - |
| 07h | MBR, EBR | CHS, LBA | Yes | File system | Microsoft | Windows Embedded CE | exFAT | - |
| 07h | File system | Quantum Software Systems | QNX 2 | QNX "qnx" | - | |||
| 08h | MBR | CHS | x86 | File system | Commodore | Commodore MS-DOS 3.x | Logical sectored FAT12 or FAT16 | - |
| 08h | CHS | x86 | File system | IBM | OS/2 1.0-1.3 | OS/2 | - | |
| 08h | File system | IBM | AIX | AIX boot/split | - | |||
| 08h | File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qny" | - | |||
| 08h | Container | Dell | Partition spanning multiple drives | - | ||||
| 09h | File system | IBM | AIX | AIX data/boot | - | |||
| 09h | File system | Quantum Software Systems | QNX 1.x/2.x | QNX "qnz" | - | |||
| 09h | MBR | CHS | 286 | File system | Mark Williams Company | Coherent | Coherent file system | - |
| 09h | MBR | File system | Microware | OS-9 | OS-9 RBF | - | ||
| 0Ah | Service | PowerQuest, IBM | OS/2 | OS/2 Boot Manager | - | |||
| 0Ah | 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 | No, AAP | Container | Microsoft | DOS 7.0+ | Extended partition with LBA | - |
| 10h | ? | Unisys | OPUS | - | ||||
| 11h | MBR | CHS | x86 | File system | Leading Edge | Leading Edge MS-DOS 3.x | Logical sectored FAT12 or FAT16 | - |
| 11h | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT12 | - | |||
| 12h | MBR | CHS, LBA | x86 | Service FS | Compaq | Configuration partition ; Recovery partition | - | |
| 12h | MBR | x86 | Service | Gang of Nine | EISA machines | EISA configuration utility for the system | - | |
| 12h | Hibernation | Compaq | Compaq Contura | Hibernation partition | - | |||
| 12h | MBR | x86 | Service FS | NCR | Diagnostics and firmware partition | - | ||
| 12h | MBR | x86 | Service FS | Intel | Service partition | - | ||
| 12h | Service FS | IBM | Rescue and Recovery partition | - | ||||
| 14h | File system | AST | AST MS-DOS 3.x | Logical sectored FAT12 or FAT16 | - | |||
| 14h | x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 | - | ||
| 14h | LBA | x86 | File system | Lasse Krogh Thygesen | Maverick OS | Omega file system | - | |
| 15h | No, AAP | Hidden container | IBM | OS/2 Boot Manager | Hidden extended partition with CHS addressing | - | ||
| 15h | LBA | No | Swap | Lasse Krogh Thygesen | Maverick OS | Swap | - | |
| 16h | x86, 68000, 8080/Z80 | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16B | - | ||
| 17h | Hidden FS | IBM | OS/2 Boot Manager | Hidden IFS | - | |||
| 17h | Hidden FS | IBM | OS/2 Boot Manager | Hidden HPFS | - | |||
| 17h | Hidden FS | IBM | OS/2 Boot Manager | Hidden NTFS | - | |||
| 17h | Hidden FS | IBM | OS/2 Boot Manager | Hidden exFAT | - | |||
| 18h | No | Hibernation | AST | AST Windows | AST Zero Volt Suspend or SmartSleep partition | - | ||
| 19h | Willow Schlanger | Willowtech Photon coS | Willowtech Photon coS | - | ||||
| 1Bh | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 | - | |||
| 1Ch | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT32 with LBA | - | |||
| 1Ch | Service FS | ASUS | ASUS eRecovery | ASUS recovery partition | - | |||
| 1Eh | Hidden FS | IBM | OS/2 Boot Manager | Hidden FAT16 with LBA | - | |||
| 1Fh | MBR, EBR | LBA | Hidden container | IBM | OS/2 Boot Manager | Hidden extended partition with LBA addressing | - | |
| 20h | ? | File system | Microsoft | Windows Mobile | Windows Mobile update XIP | - | ||
| 20h | File system | Willow Schlanger | Willowsoft Overture File System | - | ||||
| 21h | MBR | ? | Hewlett Packard | HP Volume Expansion | - | |||
| 21h | File system | Dave Poirier | Oxygen | FSo2 | - | |||
| 22h | Container | Dave Poirier | Oxygen | Oxygen Extended Partition Table | - | |||
| 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 | - |
| 25h | ? | File system | Microsoft | Windows Mobile | Windows Mobile IMGFS | - | ||
| 26h | Microsoft, IBM | Reserved | - | |||||
| 27h | Service FS | Microsoft | Windows | Windows Recovery Environment partition | - | |||
| 27h | MBR | LBA | Yes | Service FS | Acer | D2D eRecovery | Rescue partition | - |
| 27h | File system | MirOS BSD | MirOS partition | - | ||||
| 27h | ? | Service | RooterBOOT | RooterBOOT kernel partition | - | |||
| 2Ah | File system | Kurt Skauen | AtheOS | AtheOS file system | - | |||
| 2Ah | MBR, EBR | LBA | x86 | File system | Reserved | - | ||
| 2Bh | File system | Kristian van der Vliet | SyllableOS | SyllableSecure, a variant of [|AthFS] | - | |||
| 31h | Microsoft, IBM | Reserved | - | |||||
| 32h | File system | Alien Internet Services | NOS | - | ||||
| 33h | Microsoft, IBM | Reserved | - | |||||
| 34h | Microsoft, IBM | Reserved | - | |||||
| 35h | MBR, EBR | CHS, LBA | No | File system | IBM | OS/2 Warp Server / eComStation | JFS | - |
| 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 | - | |||
| 39h | 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 | - | |||
| 3Dh | Hidden FS | PowerQuest | PartitionMagic | Hidden NetWare | - | |||
| 40h | PICK Systems | PICK | PICK R83 | - | ||||
| 40h | VenturCom | Venix | Venix 80286 | - | ||||
| 41h | Yes | Personal RISC | Personal RISC Boot | - | ||||
| 41h | Linux | Linux | Old Linux/Minix | - | ||||
| 41h | PowerPC | PowerPC | PowerPC | PPC PReP Boot | - | |||
| 42h | Secured FS | Peter Gutmann | SFS | Secure File system | - | |||
| 42h | No | Linux | Linux | Old Linux swap | - | |||
| 42h | Container | Microsoft | Windows 2000, XP, etc. | Dynamic extended partition marker | - | |||
| 43h | Yes | File system | Linux | Linux | Old Linux native | - | ||
| 44h | Wildfile | GoBack | Norton GoBack, WildFile GoBack, Adaptec GoBack, Roxio GoBack | - | ||||
| 45h | CHS | Priam | Priam | - | ||||
| 45h | MBR | CHS | Yes | Boot-US | Boot-US boot manager | - | ||
| 45h | Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN | - | ||||
| 46h | Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN | - | ||||
| 47h | Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN | - | ||||
| 48h | Jochen Liedtke, GMD | EUMEL/ELAN | EUMEL/ELAN, ERGOS L3 | - | ||||
| 4Ah | MBR | Yes | Nick Roberts | AdaOS | Aquila | - | ||
| 4Ah | 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 file system | - | ||||
| 4Dh | Quantum Software Systems | QNX 4.x, Neutrino | Primary QNX POSIX volume on disk | - | ||||
| 4Eh | Quantum Software Systems | QNX 4.x, Neutrino | Secondary QNX POSIX volume on disk | - | ||||
| 4Fh | Quantum Software Systems | QNX 4.x, Neutrino | Tertiary QNX POSIX volume on disk | - | ||||
| 4Fh | Yes | ETH Zürich | ETH Oberon | Boot / native file system | - | |||
| 50h | ETH Zürich | ETH Oberon | Alternative native file system | - | ||||
| 50h | No | OnTrack | Disk Manager 4 | Read-only partition | - | |||
| 50h | LynxOS | Lynx RTOS | - | |||||
| 50h | Novell | - | ||||||
| 51h | Novell | - | ||||||
| 51h | No | OnTrack | Disk Manager 4-6 | Read-write partition | - | |||
| 52h | MBR | CHS | File system | Digital Research | CP/M-80 | CP/M-80 | - | |
| 52h | Microport | System V/AT, V/386 | - | |||||
| 53h | OnTrack | Disk Manager 6 | Auxiliary 3 | - | ||||
| 54h | OnTrack | Disk Manager 6 | Dynamic Drive Overlay | - | ||||
| 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 | - | ||||
| 56h | MicroHouse / StorageSoft | EZ-Drive | Disk Manager partition converted to EZ-BIOS | - | ||||
| 56h | Golden Bow | VFeature | VFeature partitionned volume | - | ||||
| 57h | MicroHouse / StorageSoft | DrivePro | - | |||||
| 57h | Novell | VNDI partition | - | |||||
| 5Ch | CHS | Container | Priam | EDISK | Priam EDisk Partitioned Volume | - | ||
| 61h | MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT12 | - | |
| 63h | CHS | File system | AT&T | SCO Unix, ISC, UnixWare, AT&T System V/386, ix, MtXinu BSD 4.3 on Mach, GNU HURD | - | |||
| 63h | MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT12 | - | |
| 64h | ? | Storage Dimensions | SpeedStor | Hidden FAT16 | - | |||
| 64h | File system | Novell | NetWare | NetWare File System 286/2 | - | |||
| 64h | Secured FS | Solomon | PC-ARMOUR | - | ||||
| 65h | File system | Novell | NetWare | NetWare File System 386 | - | |||
| 66h | File system | Novell | NetWare | NetWare File System 386 | - | |||
| 66h | ? | Novell | NetWare | Storage Management Services | - | |||
| 66h | MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden read-only FAT16 | - | |
| 67h | ? | Novell | NetWare | Wolf Mountain | - | |||
| 68h | ? | Novell | NetWare | - | ||||
| 69h | ? | Novell | NetWare 5 | - | ||||
| 69h | ? | Novell | NetWare | Novell Storage Services | - | |||
| 6Ch | MBR | CHS, LBA | x86 | Container | DragonFly BSD | BSD | BSD slice | - |
| 70h | Service | DiskSecure | DiskSecure multiboot | - | ||||
| 71h | Microsoft, IBM | Reserved | - | |||||
| 72h | MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT12 | - | |
| 72h | File system | Nordier | Unix V7/x86 | V7/x86 | - | |||
| 73h | Microsoft, IBM | Reserved | - | |||||
| 74h | MBR | CHS | Hidden FS | Storage Dimensions | SpeedStor | Hidden FAT16B | - | |
| 75h | File system | IBM | PC/IX | - | ||||
| 76h | Storage Dimensions | SpeedStor | Hidden read-only FAT16B | - | ||||
| 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 | - | |
| 7Ah | MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16 | - | |
| 7Bh | MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT16B | - | |
| 7Ch | MBR, EBR | LBA | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 | - | |
| 7Dh | MBR, EBR | CHS | x86 | Policy FS | APTI conformant systems | APTI alternative FAT32 | - | |
| 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 | - | ||||
| 80h | File system | Andrew Tanenbaum | Minix 1.1-1.4a | MINIX file system | - | |||
| 81h | File system | Andrew Tanenbaum | Minix 1.4b+ | MINIX file system | - | |||
| 81h | ? | ? | ? | Mitac Advanced Disk Manager | - | |||
| 82h | No | Swap | GNU/Linux | Linux | Linux swap space | - | ||
| 82h | x86 | Container | Sun Microsystems | Solaris x86 | - | |||
| 82h | ? | Prime Computer | PRIMOS | - | ||||
| 83h | Yes | File system | GNU/Linux | Linux | Any native Linux file system | - | ||
| 84h | No | Hibernation | Microsoft | ? | APM hibernation | - | ||
| 84h | Hidden FS | IBM | OS/2 | Hidden C: | - | |||
| 84h | Hibernation | Intel | Rapid Start technology | Rapid Start hibernation data | - | |||
| 85h | No, AAP | Container | GNU/Linux | Linux | Linux extended | - | ||
| 86h | File system | Microsoft | Windows NT 4 Server | Fault-tolerant FAT16B mirrored volume set | - | |||
| 86h | Service | GNU/Linux | Linux | Linux RAID superblock with auto-detect | - | |||
| 87h | File system | Microsoft | Windows NT 4 Server | Fault-tolerant HPFS/NTFS mirrored volume set | - | |||
| 88h | Service | GNU/Linux | Linux plaintext partition table | - | ||||
| 8Ah | Service | Martin Kiewitz | AiR-BOOT | Linux kernel image | - | |||
| 8Bh | File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set | - | |||
| 8Ch | File system | Microsoft | Windows NT 4 Server | Legacy fault-tolerant FAT32 mirrored volume set | - | |||
| 8Dh | MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT12 | - |
| 8Eh | Container | GNU/Linux | Linux | Linux LVM since 1999 | - | |||
| 90h | MBR, EBR | CHS, LBA | x86, 68000, 8080/Z80 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 | - |
| 91h | MBR, EBR | CHS, LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden extended partition with CHS addressing | - |
| 92h | MBR, EBR | CHS, LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16B | - |
| 93h | File system | Andrew S. Tanenbaum | Amoeba | Amoeba native file system | - | |||
| 93h | Hidden FS | Linux | Hidden Linux file system | - | ||||
| 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 | - |
| 98h | MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT32 | - |
| 98h | MBR | CHS, LBA | x86 | Service FS | Datalight | ROM-DOS | Service partition ROM-DOS SuperBoot | - |
| 98h | MBR | CHS, LBA | x86 | Service FS | Intel | ? | Service partition | - |
| 99h | File system | ? | ? | Early Unix | - | |||
| 9Ah | MBR, EBR | LBA | x86 | Hidden FS | FreeDOS | Free FDISK | Hidden FAT16 | - |
| 9Bh | MBR, EBR | LBA | No, AAP | Hidden container | FreeDOS | Free FDISK | Hidden extended partition with LBA | - |
| 9Eh | File system | Andy Valencia | VSTa | - | ||||
| 9Eh | File system | Andy Valencia | ForthOS | ForthOS | - | |||
| 9Fh | ? | ? | BSD/OS 3.0+, BSDI | - | ||||
| A0h | MBR | Service FS | Hewlett Packard | ? | Diagnostic partition for HP laptops | - | ||
| A0h | Hibernation | Phoenix, IBM, Toshiba, Sony | ? | Hibernate partition | - | |||
| A1h | ? | Hewlett Packard | HP Volume Expansion | - | ||||
| A1h | Hibernation | Phoenix, NEC | ? | Hibernate partition | - | |||
| A2h | MBR | CHS, LBA | ARM | Image | Altera | Cyclone V | Hard Processor System ARM preloader | - |
| A3h | ? | Hewlett Packard | HP Volume Expansion | - | ||||
| A4h | ? | Hewlett Packard | HP Volume Expansion | - | ||||
| A5h | MBR | Container | FreeBSD | BSD | BSD slice | - | ||
| A6h | ? | Hewlett Packard | HP Volume Expansion | - | ||||
| A6h | MBR | Container | OpenBSD | OpenBSD | OpenBSD slice | - | ||
| A7h | 386 | File system | NeXT | NeXTSTEP | - | |||
| A8h | File system | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X UFS | - | |||
| A9h | MBR | Container | NetBSD | NetBSD | NetBSD slice | - | ||
| AAh | MBR | CHS | ? | File system | Olivetti | MS-DOS | Olivetti MS-DOS FAT12 | - |
| ABh | Yes | Service | Apple | Darwin, Mac OS X | Apple Darwin, Mac OS X boot | - | ||
| ABh | File system | Stanislav Karchebny | GO! OS | GO! | - | |||
| ACh | Yes | 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+ | - | ||
| AFh | 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 | - | ||||
| B1h | File system | QNX Software Systems | 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 | ? | Hewlett Packard | HP Volume Expansion | - | ||||
| B3h | 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 | - | ||||
| B6h | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored master volume | - | ||
| B7h | File system | BSDI | BSDI native file system / swap | - | ||||
| B7h | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant HPFS/NTFS mirrored master volume | - | ||
| B8h | File system | BSDI | BSDI swap / native file system | - | ||||
| 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 | - | |||
| BBh | MBR | Service FS | Acronis | Acronis True Image | OEM Secure Zone | - | ||
| BBh | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored master volume | - | ||
| BCh | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored master volume | - | ||
| BCh | MBR | LBA | Service FS | Acronis | Acronis True Image | Acronis Secure Zone | ||
| BCh | MBR, EBR | Service FS | Paragon Software Group | Backup Capsule | Backup Capsule | - | ||
| BDh | File system | ? | BonnyDOS/286 | - | ||||
| BEh | Yes | File system | Sun Microsystems | Solaris 8 | Solaris 8 boot | - | ||
| BFh | x86 | Container | Sun Microsystems | Solaris | Solaris x86 | - | ||
| C0h | MBR | CHS, LBA | x86 | Secured container | Novell, IMS | DR-DOS, Multiuser DOS, REAL/32 | Secured FAT partition | - |
| C1h | MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT12 | - |
| 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 | - |
| C5h | MBR, EBR | CHS, LBA | No, AAP | Secured container | Digital Research | DR DOS 6.0+ | Secured extended partition with CHS addressing | - |
| C6h | MBR, EBR | CHS, LBA | x86 | Secured FS | Digital Research | DR DOS 6.0+ | Secured FAT16B | - |
| C6h | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT16B mirrored slave volume | - | ||
| C7h | MBR | Yes | File system | Syrinx | Syrinx boot | - | ||
| C7h | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant HPFS/NTFS mirrored slave volume | - | ||
| 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 | Caldera | DR-DOS 7.0x | Secured FAT32 | - |
| CBh | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored slave volume | - | ||
| CCh | MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT32 | - |
| CCh | EBR | File system | Microsoft | Windows NT 4 Server | Corrupted fault-tolerant FAT32 mirrored slave volume | - | ||
| CDh | No | Service | Convergent Technologies, Unisys | CTOS | Memory dump | - | ||
| CEh | MBR, EBR | LBA | x86 | Secured FS | Caldera | DR-DOS 7.0x | Secured FAT16B | - |
| CFh | MBR, EBR | LBA | No, AAP | Secured container | Caldera | DR-DOS 7.0x | Secured extended partition with LBA | - |
| D0h | MBR | CHS, LBA | 386 | Secured container | Novell, IMS | Multiuser DOS, REAL/32 | Secured FAT partition | - |
| D1h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT12 | - |
| D4h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16 | - |
| D5h | MBR, EBR | CHS | No | Secured container | Novell | Multiuser DOS | Secured extended partition with CHS addressing | - |
| D6h | MBR, EBR | CHS | 386 | Secured FS | Novell | Multiuser DOS | Secured FAT16B | - |
| D8h | MBR | CHS | File system | Digital Research | CP/M-86 | CP/M-86 | - | |
| DAh | No | Service | John Hardin | Non-file system data | - | |||
| DAh | Secured FS | DataPower | Powercopy Backup | Shielded disk | - | |||
| DBh | MBR | CHS | x86 | File system | Digital Research | CP/M-86, Concurrent CP/M-86, Concurrent DOS | - | |
| DBh | ? | Convergent Technologies, Unisys | CTOS | ? | - | |||
| DBh | x86 | Service | KDG Telemetry | D800 | boot image for x86 supervisor CPU module | - | ||
| DBh | MBR | CHS, LBA | x86 | Service FS | Dell | DRMK | FAT32 system restore partition | - |
| DDh | No | Service | Convergent Technologies, Unisys | CTOS | Hidden memory dump | - | ||
| DEh | MBR | CHS, LBA | x86 | Hidden FS | Dell | FAT16 utility/diagnostic partition | - | |
| DFh | ? | Data General | DG/UX | DG/UX virtual disk manager | - | |||
| DFh | MBR | Blocker | TeraByte Unlimited | BootIt | EMBRM | - | ||
| DFh | ? | ? | Aviion | - | ||||
| E0h | File system | STMicroelectronics | ST AVFS | - | ||||
| E1h | MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT12 | - | |
| E3h | File system | Storage Dimensions | SpeedStor | Read-only FAT12 | - | |||
| E4h | MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16 | - | |
| E5h | MBR | CHS | x86 | File system | Tandy | Tandy MS-DOS | Logical sectored FAT12 or FAT16 | - |
| E6h | File System | Storage Dimensions | SpeedStor | Read-only FAT16 | - | |||
| E8h | MBR,EBR | CHS, LBA | No | Service | Linux | LUKS | Linux Unified Key Setup | - |
| EBh | 386 | File system | Be Inc. | BeOS, Haiku | BFS | - | ||
| ECh | File system | Robert Szeleney | SkyOS | SkyFS | - | |||
| EDh | MBR, EBR | CHS, LBA | x86 | Service | Matthias R. Paul | Sprytix | EDC loader | - |
| EDh | MBR | CHS, LBA | x86 | Hewlett Packard | EFI | Was proposed for GPT hybrid MBR | - | |
| EEh | MBR | No | Blocker | Microsoft | EFI | GPT protective MBR | - | |
| EFh | MBR | Service FS | Intel | EFI | EFI system partition. Can be a FAT12, FAT16, FAT32 file system | - | ||
| 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 secondary partition | - |
| F4h | MBR | CHS | File system | Storage Dimensions | SpeedStor | FAT16B | - | |
| F4h | 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 | - | ||
| F7h | File system | Natalia Portillo | O.S.G. | EFAT | - | |||
| F7h | 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 | 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 | GNU/Linux | Linux | Linux RAID superblock with auto-detect | - | |||
| FEh | ? | Intel | LANstep | - | ||||
| FEh | Service | IBM | PS/2 | PS/2 IML partition | - | |||
| FEh | MBR | CHS, LBA | x86 | Service FS | IBM | PS/2 | PS/2 recovery partition, | - |
| FEh | Service | Microsoft | Windows NT | Disk Administration hidden partition | - | |||
| FEh | Service | GNU/Linux | Linux | Old Linux LVM | - | |||
| FFh | MBR | CHS | No | Service | Microsoft | XENIX | XENIX bad block table | - |