Partition ID

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.).

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 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.

Local or Experimental Use

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]

List of partition IDs

This is a list of known master boot record partition types on IBM PC compatible computers:

Zdroj:https://en.wikipedia.org?pojem=Partition_ID
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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]}
`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^[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]}
`11h`				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]}
`15h`		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]}
`1Ch`				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
`20h`				File system	Willow Schlanger		Willowsoft Overture File System (OFS1) (see `19h`)
`21h`	MBR			?	Hewlett-Packard	HP Volume Expansion	^{[nb 5]}
`21h`				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`)
`2Ah`	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)
`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 (PartitionMagic or DriveImage in progress)^[14]
`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
					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`

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