GUID Partition Table (original) (raw)
It has several advantages over master boot record (MBR) partition tables, such as support for more than four primary partitions and 64-bit rather than 32-bit logical block addresses (LBA) for blocks on a storage device. The larger LBA size supports larger disks.
Some BIOSes support GPT partition tables as well as MBR partition tables, in order to support larger disks than MBR partition tables can support.
GPT uses universally unique identifiers (UUIDs), which are also known as globally unique identifiers (GUIDs), to identify partitions and partition types.
All modern personal computer operating systems support GPT. Some, including macOS and Microsoft Windows on the x86 architecture, support booting from GPT partitions only on systems with EFI firmware, but FreeBSD and most Linux distributions can boot from GPT partitions on systems with either the BIOS or the EFI firmware interface.
The Master Boot Record (MBR) partitioning scheme, widely used since the early 1980s, had limitations when it came to modern hardware. The available size for block addresses and related information is limited to 32 bits. For hard disks with 512‑byte sectors, the MBR partition table entries allow a maximum size of 2 TiB (2³² × 512‑bytes) or 2.20 TB (2.20 × 10¹² bytes).[1]
In the late 1990s, Intel developed a new partition table format as part of what eventually became the Unified Extensible Firmware Interface (UEFI). The GUID Partition Table is specified in chapter 5 of the UEFI 2.11 specification.[2]: 111 GPT uses 64 bits for logical block addresses, allowing a maximum disk size of 264 sectors. For disks with 512‑byte sectors, the maximum size is 8 ZiB (264 × 512‑bytes) or 9.44 ZB (9.44 × 10²¹ bytes).[1] For disks with 4,096‑byte sectors the maximum size is 64 ZiB (264 × 4,096‑bytes) or 75.6 ZB (75.6 × 10²¹ bytes).
In 2010, hard-disk manufacturers introduced drives with 4,096‑byte sectors (Advanced Format).[3] For compatibility with legacy hardware and software, those drives include an emulation technology (512e) that presents 512‑byte sectors to the entity accessing the hard drive, despite their underlying 4,096‑byte physical sectors.[4] Performance could be degraded on write operations, when the drive is forced to perform two read-modify-write operations to satisfy a single misaligned 4,096‑byte write operation.[4] Since April 2014, enterprise-class drives without emulation technology (4K native) have been available on the market.[5][6]
Readiness of the support for 4 KB logical sectors within operating systems differs among their types, vendors and versions.[7] For example, Microsoft Windows supports 4K native drives since Windows 8 and Windows Server 2012 (both released in 2012) in UEFI.[8]
Like MBR, GPT uses logical block addressing (LBA) in place of the historical cylinder-head-sector (CHS) addressing. The protective MBR is stored at LBA 0, and the GPT header is in LBA 1. The GPT header has a pointer to the partition table (Partition Entry Array), which is typically at LBA 2. Each entry in the partition table has the same size, which is 128 or 256 or 512, etc., bytes; typically this size is 128 bytes. The UEFI specification stipulates that a minimum of 16,384 bytes, regardless of sector size, are allocated for the Partition Entry Array. Thus, on a disk with 512-byte sectors, at least 32 sectors are used for the Partition Entry Array, and the first usable block is at LBA 34 or higher, while on a 4,096-byte sector disk, at least 4 sectors are used for the Partition Entry Array, and the first usable block is at LBA 6 or higher. In addition to the primary GPT header and Partition Entry Array, stored at the beginning of the disk, there is a backup GPT header and Partition Entry Array, stored at the end of the disk. The backup GPT header must be at the last block on the disk (LBA -1) and the backup Partition Entry Array is placed between the end of the last partition and the last block.[2]: pp. 115-120, §5.3
For limited backward compatibility, the space of the legacy Master Boot Record (MBR) is still reserved in the GPT specification, but it is now used in a way that prevents MBR-based disk utilities from misrecognizing and possibly overwriting GPT disks. This is referred to as a protective MBR.[9]
A single partition of type EEh, encompassing the entire GPT drive (where "entire" actually means as much of the drive as can be represented in an MBR), is indicated and identifies it as GPT. Operating systems and tools which cannot read GPT disks will generally recognize the disk as containing one partition of unknown type and no empty space, and will typically refuse to modify the disk unless the user explicitly requests and confirms the deletion of this partition. This minimizes accidental erasures.[9] Furthermore, GPT-aware OSes may check the protective MBR and if the enclosed partition type is not of type EEh or if there are multiple partitions defined on the target device, the OS may refuse to manipulate the partition table.[10]
If the actual size of the disk exceeds the maximum partition size representable using the legacy 32-bit LBA entries in the MBR partition table, the recorded size of this partition is clipped at the maximum, thereby ignoring the rest of the disk. This amounts to a maximum reported size of 2 TiB, assuming a disk with 512 bytes per sector (see 512e). It would result in 16 TiB with 4 KiB sectors (4Kn), but since many older operating systems and tools are hard coded for a sector size of 512 bytes or are limited to 32-bit calculations, exceeding the 2 TiB limit could cause compatibility problems.[9]
In operating systems that support GPT-based boot through BIOS services rather than EFI, the first sector may also still be used to store the first stage of the bootloader code, but modified to recognize GPT partitions. The bootloader in the MBR must not assume a sector size of 512 bytes.[9]
The partition table header defines the usable blocks on the disk. It also defines the number and size of the partition entries that make up the partition table (offsets 80 and 84 in the table).[2]: 117-118
After the primary header and before the backup header, the Partition Entry Array describes partitions, using a minimum size of 128 bytes for each entry block.[13] The starting location of the array on disk, and the size of each entry, are given in the GPT header. The first 16 bytes of each entry designate the partition type's globally unique identifier (GUID). For example, the GUID for an EFI system partition is C12A7328-F81F-11D2-BA4B-00A0C93EC93B. The second 16 bytes are a GUID unique to the partition. Then follow the starting and ending 64 bit LBAs, partition attributes, and the 36 character (max.) Unicode partition name. As is the nature and purpose of GUIDs and as per RFC 4122, no central registry is needed to ensure the uniqueness of the GUID partition type designators.[14][2]: 1970
The 64-bit partition table attributes are shared between 48-bit common attributes for all partition types, and 16-bit type-specific attributes:
Windows 7 and earlier do not support UEFI on 32-bit platforms, and therefore do not allow booting from GPT partitions.[33]
"Partition type GUID" means that each partition type is strictly identified by a GUID number unique to that type, and therefore partitions of the same type will all have the same "partition type GUID". Each partition also has a "partition unique GUID" as a separate entry, which as the name implies is a unique id for each partition.
Operating system
Partition type
Globally unique identifier (GUID)[g]
OS independent
Unused entry
00000000-0000-0000-0000-000000000000
MBR partition scheme
024DEE41-33E7-11D3-9D69-0008C781F39F
C12A7328-F81F-11D2-BA4B-00A0C93EC93B
21686148-6449-6E6F-744E-656564454649
Intel Fast Flash (iFFS) partition (for Intel Rapid Start technology)[43][44]
D3BFE2DE-3DAF-11DF-BA40-E3A556D89593
Sony boot partition[i]
F4019732-066E-4E12-8273-346C5641494F
Lenovo boot partition[i]
BFBFAFE7-A34F-448A-9A5B-6213EB736C22
Microsoft Reserved Partition (MSR)[46]
E3C9E316-0B5C-4DB8-817D-F92DF00215AE
EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
Logical Disk Manager (LDM) metadata partition[46]
5808C8AA-7E8F-42E0-85D2-E1E90434CFB3
Logical Disk Manager data partition[46]
AF9B60A0-1431-4F62-BC68-3311714A69AD
Windows Recovery Environment[46]
DE94BBA4-06D1-4D40-A16A-BFD50179D6AC
IBM General Parallel File System (GPFS) partition
37AFFC90-EF7D-4E96-91C3-2D7AE055B174
Storage Spaces partition[48]
E75CAF8F-F680-4CEE-AFA3-B001E56EFC2D
Storage Replica partition[49]
558D43C5-A1AC-43C0-AAC8-D1472B2923D1
Data partition
75894C1E-3AEB-11D3-B7C1-7B03A0000000
Service partition
E2A1E728-32E3-11D6-A682-7B03A0000000
Linux filesystem data[j]
0FC63DAF-8483-4772-8E79-3D69D8477DE4
RAID partition
A19D880F-05FC-4D3B-A006-743F0F84911E
Root partition
6523F8AE-3EB1-4E2A-A05A-18B695AE656F
D27F46ED-2919-4CB8-BD25-9531F3C16534
69DAD710-2CE4-4E3C-B16C-21A1D49ABED3
B921B045-1DF0-41C3-AF44-4C6F280D3FAE
993D8D3D-F80E-4225-855A-9DAF8ED7EA97
77055800-792C-4F94-B39A-98C91B762BB6
mips: 32‐bit MIPS big‐endian[50]
E9434544-6E2C-47CC-BAE2-12D6DEAFB44C
mips64: 64‐bit MIPS big‐endian[50]
D113AF76-80EF-41B4-BDB6-0CFF4D3D4A25
mipsel: 32‐bit MIPS little‐endian[50]
37C58C8A-D913-4156-A25F-48B1B64E07F0
mips64el: 64‐bit MIPS little‐endian[50]
700BDA43-7A34-4507-B179-EEB93D7A7CA3
1AACDB3B-5444-4138-BD9E-E5C2239B2346
1DE3F1EF-FA98-47B5-8DCD-4A860A654D78
64‐bit PowerPC big‐endian[50]
912ADE1D-A839-4913-8964-A10EEE08FBD2
64‐bit PowerPC little‐endian[50]
C31C45E6-3F39-412E-80FB-4809C4980599
60D5A7FE-8E7D-435C-B714-3DD8162144E1
RISC-V 64‐bit[50]
72EC70A6-CF74-40E6-BD49-4BDA08E8F224
08A7ACEA-624C-4A20-91E8-6E0FA67D23F9
s390x[50]
5EEAD9A9-FE09-4A1E-A1D7-520D00531306
C50CDD70-3862-4CC3-90E1-809A8C93EE2C
44479540-F297-41B2-9AF7-D131D5F0458A
4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709
/usr partition
Alpha[50]
E18CF08C-33EC-4C0D-8246-C6C6FB3DA024
ARC[50]
7978A683-6316-4922-BBEE-38BFF5A2FECC
ARM 32‐bit[50]
7D0359A3-02B3-4F0A-865C-654403E70625
AArch64[50]
B0E01050-EE5F-4390-949A-9101B17104E9
IA-64[50]
4301D2A6-4E3B-4B2A-BB94-9E0B2C4225EA
LoongArch 64‐bit[50]
E611C702-575C-4CBE-9A46-434FA0BF7E3F
mips: 32‐bit MIPS big‐endian[50]
773B2ABC-2A99-4398-8BF5-03BAAC40D02B
mips64: 64‐bit MIPS big‐endian[50]
57E13958-7331-4365-8E6E-35EEEE17C61B
mipsel: 32‐bit MIPS little‐endian[50]
0F4868E9-9952-4706-979F-3ED3A473E947
mips64el: 64‐bit MIPS little‐endian[50]
C97C1F32-BA06-40B4-9F22-236061B08AA8
PA-RISC[50]
DC4A4480-6917-4262-A4EC-DB9384949F25
32‐bit PowerPC[50]
7D14FEC5-CC71-415D-9D6C-06BF0B3C3EAF
64‐bit PowerPC big‐endian[50]
2C9739E2-F068-46B3-9FD0-01C5A9AFBCCA
64‐bit PowerPC little‐endian[50]
15BB03AF-77E7-4D4A-B12B-C0D084F7491C
RISC-V 32‐bit[50]
B933FB22-5C3F-4F91-AF90-E2BB0FA50702
RISC-V 64‐bit[50]
BEAEC34B-8442-439B-A40B-984381ED097D
s390[50]
CD0F869B-D0FB-4CA0-B141-9EA87CC78D66
s390x[50]
8A4F5770-50AA-4ED3-874A-99B710DB6FEA
TILE-Gx[50]
55497029-C7C1-44CC-AA39-815ED1558630
x86[50]
75250D76-8CC6-458E-BD66-BD47CC81A812
x86-64[50]
8484680C-9521-48C6-9C11-B0720656F69E
Root verity partition for dm-verity
Alpha[50]
FC56D9E9-E6E5-4C06-BE32-E74407CE09A5
ARC [50]
24B2D975-0F97-4521-AFA1-CD531E421B8D
ARM 32‐bit [50]
7386CDF2-203C-47A9-A498-F2ECCE45A2D6
AArch64 [50]
DF3300CE-D69F-4C92-978C-9BFB0F38D820
IA-64 [50]
86ED10D5-B607-45BB-8957-D350F23D0571
LoongArch 64‐bit [50]
F3393B22-E9AF-4613-A948-9D3BFBD0C535
mips: 32‐bit MIPS big‐endian [50]
7A430799-F711-4C7E-8E5B-1D685BD48607
mips64: 64‐bit MIPS big‐endian [50]
579536F8-6A33-4055-A95A-DF2D5E2C42A8
mipsel: 32‐bit MIPS little‐endian [50]
D7D150D2-2A04-4A33-8F12-16651205FF7B
mips64el: 64‐bit MIPS little‐endian [50]
16B417F8-3E06-4F57-8DD2-9B5232F41AA6
PA-RISC [50]
D212A430-FBC5-49F9-A983-A7FEEF2B8D0E
64‐bit PowerPC little‐endian [50]
906BD944-4589-4AAE-A4E4-DD983917446A
64‐bit PowerPC big‐endian [50]
9225A9A3-3C19-4D89-B4F6-EEFF88F17631
32‐bit PowerPC [50]
98CFE649-1588-46DC-B2F0-ADD147424925
RISC-V 32‐bit [50]
AE0253BE-1167-4007-AC68-43926C14C5DE
RISC-V 64‐bit [50]
B6ED5582-440B-4209-B8DA-5FF7C419EA3D
s390 [50]
7AC63B47-B25C-463B-8DF8-B4A94E6C90E1
s390x [50]
B325BFBE-C7BE-4AB8-8357-139E652D2F6B
TILE-Gx [50]
966061EC-28E4-4B2E-B4A5-1F0A825A1D84
x86-64 [50]
2C7357ED-EBD2-46D9-AEC1-23D437EC2BF5
x86 [50]
D13C5D3B-B5D1-422A-B29F-9454FDC89D76
/usr verity partition for dm-verity
Alpha [50]
8CCE0D25-C0D0-4A44-BD87-46331BF1DF67
ARC [50]
FCA0598C-D880-4591-8C16-4EDA05C7347C
ARM 32‐bit [50]
C215D751-7BCD-4649-BE90-6627490A4C05
AArch64 [50]
6E11A4E7-FBCA-4DED-B9E9-E1A512BB664E
IA-64 [50]
6A491E03-3BE7-4545-8E38-83320E0EA880
LoongArch 64‐bit [50]
F46B2C26-59AE-48F0-9106-C50ED47F673D
mips: 32‐bit MIPS big‐endian [50]
6E5A1BC8-D223-49B7-BCA8-37A5FCCEB996
mips64: 64‐bit MIPS big‐endian [50]
81CF9D90-7458-4DF4-8DCF-C8A3A404F09B
mipsel: 32‐bit MIPS little‐endian [50]
46B98D8D-B55C-4E8F-AAB3-37FCA7F80752
mips64el: 64‐bit MIPS little‐endian [50]
3C3D61FE-B5F3-414D-BB71-8739A694A4EF
PA-RISC [50]
5843D618-EC37-48D7-9F12-CEA8E08768B2
64‐bit PowerPC little‐endian [50]
EE2B9983-21E8-4153-86D9-B6901A54D1CE
64‐bit PowerPC big‐endian [50]
BDB528A5-A259-475F-A87D-DA53FA736A07
32‐bit PowerPC [50]
DF765D00-270E-49E5-BC75-F47BB2118B09
RISC-V 32‐bit [50]
CB1EE4E3-8CD0-4136-A0A4-AA61A32E8730
RISC-V 64‐bit [50]
8F1056BE-9B05-47C4-81D6-BE53128E5B54
s390 [50]
B663C618-E7BC-4D6D-90AA-11B756BB1797
s390x [50]
31741CC4-1A2A-4111-A581-E00B447D2D06
TILE-Gx [50]
2FB4BF56-07FA-42DA-8132-6B139F2026AE
x86-64 [50]
77FF5F63-E7B6-4633-ACF4-1565B864C0E6
x86 [50]
8F461B0D-14EE-4E81-9AA9-049B6FB97ABD
Root verity signature partition for dm-verity
Alpha[50]
D46495B7-A053-414F-80F7-700C99921EF8
ARC[50]
143A70BA-CBD3-4F06-919F-6C05683A78BC
ARM 32‐bit[50]
42B0455F-EB11-491D-98D3-56145BA9D037
AArch64[50]
6DB69DE6-29F4-4758-A7A5-962190F00CE3
IA-64[50]
E98B36EE-32BA-4882-9B12-0CE14655F46A
LoongArch 64‐bit[50]
5AFB67EB-ECC8-4F85-AE8E-AC1E7C50E7D0
mips: 32‐bit MIPS big‐endian[50]
BBA210A2-9C5D-45EE-9E87-FF2CCBD002D0
mips64: 64‐bit MIPS big‐endian[50]
43CE94D4-0F3D-4999-8250-B9DEAFD98E6E
mipsel: 32‐bit MIPS little‐endian[50]
C919CC1F-4456-4EFF-918C-F75E94525CA5
mips64el: 64‐bit MIPS little‐endian[50]
904E58EF-5C65-4A31-9C57-6AF5FC7C5DE7
PA-RISC[50]
15DE6170-65D3-431C-916E-B0DCD8393F25
64‐bit PowerPC little‐endian[50]
D4A236E7-E873-4C07-BF1D-BF6CF7F1C3C6
64‐bit PowerPC big‐endian[50]
F5E2C20C-45B2-4FFA-BCE9-2A60737E1AAF
32‐bit PowerPC[50]
1B31B5AA-ADD9-463A-B2ED-BD467FC857E7
RISC-V 32‐bit[50]
3A112A75-8729-4380-B4CF-764D79934448
RISC-V 64‐bit[50]
EFE0F087-EA8D-4469-821A-4C2A96A8386A
s390[50]
3482388E-4254-435A-A241-766A065F9960
s390x[50]
C80187A5-73A3-491A-901A-017C3FA953E9
TILE-Gx[50]
B3671439-97B0-4A53-90F7-2D5A8F3AD47B
x86-64[50]
41092B05-9FC8-4523-994F-2DEF0408B176
x86[50]
5996FC05-109C-48DE-808B-23FA0830B676
/usr verity signature partition for dm-verity
Alpha[50]
5C6E1C76-076A-457A-A0FE-F3B4CD21CE6E
ARC[50]
94F9A9A1-9971-427A-A400-50CB297F0F35
ARM 32‐bit[50]
D7FF812F-37D1-4902-A810-D76BA57B975A
AArch64[50]
C23CE4FF-44BD-4B00-B2D4-B41B3419E02A
IA-64[50]
8DE58BC2-2A43-460D-B14E-A76E4A17B47F
LoongArch 64‐bit[50]
B024F315-D330-444C-8461-44BBDE524E99
mips: 32‐bit MIPS big‐endian[50]
97AE158D-F216-497B-8057-F7F905770F54
mips64: 64‐bit MIPS big‐endian[50]
05816CE2-DD40-4AC6-A61D-37D32DC1BA7D
mipsel: 32‐bit MIPS little‐endian[50]
3E23CA0B-A4BC-4B4E-8087-5AB6A26AA8A9
mips64el: 64‐bit MIPS little‐endian[50]
F2C2C7EE-ADCC-4351-B5C6-EE9816B66E16
PA-RISC[50]
450DD7D1-3224-45EC-9CF2-A43A346D71EE
64‐bit PowerPC little‐endian[50]
C8BFBD1E-268E-4521-8BBA-BF314C399557
64‐bit PowerPC big‐endian[50]
0B888863-D7F8-4D9E-9766-239FCE4D58AF
32‐bit PowerPC[50]
7007891D-D371-4A80-86A4-5CB875B9302E
RISC-V 32‐bit[50]
C3836A13-3137-45BA-B583-B16C50FE5EB4
RISC-V 64‐bit[50]
D2F9000A-7A18-453F-B5CD-4D32F77A7B32
s390[50]
17440E4F-A8D0-467F-A46E-3912AE6EF2C5
s390x[50]
3F324816-667B-46AE-86EE-9B0C0C6C11B4
TILE-Gx[50]
4EDE75E2-6CCC-4CC8-B9C7-70334B087510
x86-64[50]
E7BB33FB-06CF-4E81-8273-E543B413E2E2
x86[50]
974A71C0-DE41-43C3-BE5D-5C5CCD1AD2C0
/boot, as an Extended Boot Loader (XBOOTLDR) partition[50][51]
BC13C2FF-59E6-4262-A352-B275FD6F7172
0657FD6D-A4AB-43C4-84E5-0933C84B4F4F
Logical Volume Manager (LVM) partition
E6D6D379-F507-44C2-A23C-238F2A3DF928
933AC7E1-2EB4-4F13-B844-0E14E2AEF915
/srv (server data) partition[50][51]
3B8F8425-20E0-4F3B-907F-1A25A76F98E8
Per‐user home partition[50]
773F91EF-66D4-49B5-BD83-D683BF40AD16
Plain dm-crypt partition[54][55][56]
7FFEC5C9-2D00-49B7-8941-3EA10A5586B7
LUKS partition[54][55][56][57]
CA7D7CCB-63ED-4C53-861C-1742536059CC
Reserved
8DA63339-0007-60C0-C436-083AC8230908
Linux filesystem data[k]
0FC63DAF-8483-4772-8E79-3D69D8477DE4
Linux Swap partition[l]
0657FD6D-A4AB-43C4-84E5-0933C84B4F4F
Boot partition[60]
83BD6B9D-7F41-11DC-BE0B-001560B84F0F
BSD disklabel partition[60]
516E7CB4-6ECF-11D6-8FF8-00022D09712B
Swap partition[60]
516E7CB5-6ECF-11D6-8FF8-00022D09712B
Unix File System (UFS) partition[60]
516E7CB6-6ECF-11D6-8FF8-00022D09712B
Vinum volume manager partition[60]
516E7CB8-6ECF-11D6-8FF8-00022D09712B
516E7CBA-6ECF-11D6-8FF8-00022D09712B
nandfs partition[61]
74BA7DD9-A689-11E1-BD04-00E081286ACF
Hierarchical File System Plus (HFS+) partition
48465300-0000-11AA-AA11-00306543ECAC
Apple APFS container
APFS FileVault volume container
7C3457EF-0000-11AA-AA11-00306543ECAC
55465300-0000-11AA-AA11-00306543ECAC
6A898CC3-1DD2-11B2-99A6-080020736631
Apple RAID partition
52414944-0000-11AA-AA11-00306543ECAC
Apple RAID partition, offline
52414944-5F4F-11AA-AA11-00306543ECAC
Apple Boot partition (Recovery HD)
426F6F74-0000-11AA-AA11-00306543ECAC
Apple Label
4C616265-6C00-11AA-AA11-00306543ECAC
Apple TV Recovery partition
5265636F-7665-11AA-AA11-00306543ECAC
Apple Core Storage Container
HFS+ FileVault volume container
53746F72-6167-11AA-AA11-00306543ECAC
Apple APFS Preboot partition
69646961-6700-11AA-AA11-00306543ECAC
Apple APFS Recovery partition
52637672-7900-11AA-AA11-00306543ECAC
Boot partition
6A82CB45-1DD2-11B2-99A6-080020736631
Root partition
6A85CF4D-1DD2-11B2-99A6-080020736631
Swap partition
6A87C46F-1DD2-11B2-99A6-080020736631
Backup partition
6A8B642B-1DD2-11B2-99A6-080020736631
/usr partition[m]
6A898CC3-1DD2-11B2-99A6-080020736631
/var partition
6A8EF2E9-1DD2-11B2-99A6-080020736631
/home partition
6A90BA39-1DD2-11B2-99A6-080020736631
Alternate sector
6A9283A5-1DD2-11B2-99A6-080020736631
Reserved partition
6A945A3B-1DD2-11B2-99A6-080020736631
6A9630D1-1DD2-11B2-99A6-080020736631
6A980767-1DD2-11B2-99A6-080020736631
6A96237F-1DD2-11B2-99A6-080020736631
6A8D2AC7-1DD2-11B2-99A6-080020736631
Swap partition
49F48D32-B10E-11DC-B99B-0019D1879648
FFS partition
49F48D5A-B10E-11DC-B99B-0019D1879648
LFS partition
49F48D82-B10E-11DC-B99B-0019D1879648
RAID partition
49F48DAA-B10E-11DC-B99B-0019D1879648
Concatenated partition
2DB519C4-B10F-11DC-B99B-0019D1879648
Encrypted partition
2DB519EC-B10F-11DC-B99B-0019D1879648
ChromeOS kernel
FE3A2A5D-4F32-41A7-B725-ACCC3285A309
ChromeOS rootfs
3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC
ChromeOS firmware
CAB6E88E-ABF3-4102-A07A-D4BB9BE3C1D3
ChromeOS future use
2E0A753D-9E48-43B0-8337-B15192CB1B5E
ChromeOS miniOS
09845860-705F-4BB5-B16C-8A8A099CAF52
ChromeOS hibernate
3F0F8318-F146-4E6B-8222-C28C8F02E0D5[64]
/usr partition (coreos-usr)
5DFBF5F4-2848-4BAC-AA5E-0D9A20B745A6
Resizable rootfs (coreos-resize)
3884DD41-8582-4404-B9A8-E9B84F2DF50E
OEM customizations (coreos-reserved)
C95DC21A-DF0E-4340-8D7B-26CBFA9A03E0
Root filesystem on RAID (coreos-root-raid)
BE9067B9-EA49-4F15-B4F6-F36F8C9E1818
Haiku BFS
42465331-3BA3-10F1-802A-4861696B7521
Boot partition
85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7
Data partition
85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7
Swap partition
85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7
Unix File System (UFS) partition
0394EF8B-237E-11E1-B4B3-E89A8F7FC3A7
Vinum volume manager partition
85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7
ZFS partition
85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7
Journal
45B0969E-9B03-4F30-B4C6-B4B80CEFF106
dm-crypt journal
45B0969E-9B03-4F30-B4C6-5EC00CEFF106
OSD
4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D
dm-crypt OSD
4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D
Disk in creation
89C57F98-2FE5-4DC0-89C1-F3AD0CEFF2BE
dm-crypt disk in creation
89C57F98-2FE5-4DC0-89C1-5EC00CEFF2BE
Block
CAFECAFE-9B03-4F30-B4C6-B4B80CEFF106
Block DB
30CD0809-C2B2-499C-8879-2D6B78529876
Block write-ahead log
5CE17FCE-4087-4169-B7FF-056CC58473F9
Lockbox for dm-crypt keys
FB3AABF9-D25F-47CC-BF5E-721D1816496B
Multipath OSD
4FBD7E29-8AE0-4982-BF9D-5A8D867AF560
Multipath journal
45B0969E-8AE0-4982-BF9D-5A8D867AF560
Multipath block
CAFECAFE-8AE0-4982-BF9D-5A8D867AF560
Multipath block
7F4A666A-16F3-47A2-8445-152EF4D03F6C
Multipath block DB
EC6D6385-E346-45DC-BE91-DA2A7C8B3261
Multipath block write-ahead log
01B41E1B-002A-453C-9F17-88793989FF8F
dm-crypt block
CAFECAFE-9B03-4F30-B4C6-5EC00CEFF106
dm-crypt block DB
93B0052D-02D9-4D8A-A43B-33A3EE4DFBC3
dm-crypt block write-ahead log
306E8683-4FE2-4330-B7C0-00A917C16966
dm-crypt LUKS journal
45B0969E-9B03-4F30-B4C6-35865CEFF106
dm-crypt LUKS block
CAFECAFE-9B03-4F30-B4C6-35865CEFF106
dm-crypt LUKS block DB
166418DA-C469-4022-ADF4-B30AFD37F176
dm-crypt LUKS block write-ahead log
86A32090-3647-40B9-BBBD-38D8C573AA86
dm-crypt LUKS OSD
4FBD7E29-9D25-41B8-AFD0-35865CEFF05D
Data partition
824CC7A0-36A8-11E3-890A-952519AD3F61
Power-safe (QNX6) file system[70]
CEF5A9AD-73BC-4601-89F3-CDEEEEE321A1
Plan 9 partition
C91818F9-8025-47AF-89D2-F030D7000C2C
vmkcore (coredump partition)
9D275380-40AD-11DB-BF97-000C2911D1B8
VMFS filesystem partition
AA31E02A-400F-11DB-9590-000C2911D1B8
VMware Reserved
9198EFFC-31C0-11DB-8F78-000C2911D1B8
Bootloader
2568845D-2332-4675-BC39-8FA5A4748D15
Bootloader2
114EAFFE-1552-4022-B26E-9B053604CF84
Boot
49A4D17F-93A3-45C1-A0DE-F50B2EBE2599
Recovery
4177C722-9E92-4AAB-8644-43502BFD5506
Misc
EF32A33B-A409-486C-9141-9FFB711F6266
Metadata
20AC26BE-20B7-11E3-84C5-6CFDB94711E9
System
38F428E6-D326-425D-9140-6E0EA133647C
Cache
A893EF21-E428-470A-9E55-0668FD91A2D9
Data
DC76DDA9-5AC1-491C-AF42-A82591580C0D
Persistent
EBC597D0-2053-4B15-8B64-E0AAC75F4DB1
Vendor
C5A0AEEC-13EA-11E5-A1B1-001E67CA0C3C
Config
BD59408B-4514-490D-BF12-9878D963F378
Factory
8F68CC74-C5E5-48DA-BE91-A0C8C15E9C80
Factory (alt)[75]
9FDAA6EF-4B3F-40D2-BA8D-BFF16BFB887B
767941D0-2085-11E3-AD3B-6CFDB94711E9
OEM
AC6D7924-EB71-4DF8-B48D-E267B27148FF
Android Meta
19A710A2-B3CA-11E4-B026-10604B889DCF
Android EXT
193D1EA4-B3CA-11E4-B075-10604B889DCF
Open Network Install Environment (ONIE)
Boot
7412F7D5-A156-4B13-81DC-867174929325
Config
D4E6E2CD-4469-46F3-B5CB-1BFF57AFC149
PReP boot
9E1A2D38-C612-4316-AA26-8B49521E5A8B
freedesktop.org OSes (Linux, etc.)
Shared boot loader configuration[78]
BC13C2FF-59E6-4262-A352-B275FD6F7172
Basic data partition (GEM, BGM, F32)
734E5AFE-F61A-11E6-BC64-92361F002671
Raw data partition (RAW), XHDI
35540011-B055-499F-842D-C69AECA357B7
Encrypted data partition
8C8F8EFF-AC95-4770-814A-21994F2DBC8F
ArcaOS Type 1
90B6FF38-B98F-4358-A21F-48F35B4A8AD3
Storage Performance Development Kit (SPDK)
SPDK block device[79]
7C5222BD-8F5D-4087-9C00-BF9843C7B58C
barebox bootloader
barebox-state[80]
4778ED65-BF42-45FA-9C5B-287A1DC4AAB1
U-Boot bootloader
3DE21764-95BD-54BD-A5C3-4ABE786F38A8
SoftRAID[_citation needed_]
SoftRAID_Status
B6FA30DA-92D2-4A9A-96F1-871EC6486200
SoftRAID_Scratch
2E313465-19B9-463F-8126-8A7993773801
SoftRAID_Volume
FA709C7E-65B1-4593-BFD5-E71D61DE9B02
SoftRAID_Cache
BBBA6DF5-F46F-4A89-8F59-8765B2727503
Fuchsia standard partitions[83]
Bootloader (slot A/B/R)
FE8A2634-5E2E-46BA-99E3-3A192091A350
Durable mutable encrypted system data
D9FD4535-106C-4CEC-8D37-DFC020CA87CB
Durable mutable bootloader data (including A/B/R metadata)
A409E16B-78AA-4ACC-995C-302352621A41
Factory-provisioned read-only system data
F95D940E-CABA-4578-9B93-BB6C90F29D3E
Factory-provisioned read-only bootloader data
10B8DBAA-D2BF-42A9-98C6-A7C5DB3701E7
Fuchsia Volume Manager
49FD7CB8-DF15-4E73-B9D9-992070127F0F
Verified boot metadata (slot A/B/R)
421A8BFC-85D9-4D85-ACDA-B64EEC0133E9
Zircon boot image (slot A/B/R)
9B37FFF6-2E58-466A-983A-F7926D0B04E0
Fuchsia legacy partitions[83][p]
fuchsia-esp
C12A7328-F81F-11D2-BA4B-00A0C93EC93B
fuchsia-system
606B000B-B7C7-4653-A7D5-B737332C899D
fuchsia-data
08185F0C-892D-428A-A789-DBEEC8F55E6A
fuchsia-install
48435546-4953-2041-494E-5354414C4C52
fuchsia-blob
2967380E-134C-4CBB-B6DA-17E7CE1CA45D
fuchsia-fvm
41D0E340-57E3-954E-8C1E-17ECAC44CFF5
Zircon boot image (slot A)
DE30CC86-1F4A-4A31-93C4-66F147D33E05
Zircon boot image (slot B)
23CC04DF-C278-4CE7-8471-897D1A4BCDF7
Zircon boot image (slot R)
A0E5CF57-2DEF-46BE-A80C-A2067C37CD49
sys-config
4E5E989E-4C86-11E8-A15B-480FCF35F8E6
factory-config
5A3A90BE-4C86-11E8-A15B-480FCF35F8E6
bootloader
5ECE94FE-4C86-11E8-A15B-480FCF35F8E6
guid-test
8B94D043-30BE-4871-9DFA-D69556E8C1F3
Verified boot metadata (slot A)
A13B4D9A-EC5F-11E8-97D8-6C3BE52705BF
Verified boot metadata (slot B)
A288ABF2-EC5F-11E8-97D8-6C3BE52705BF
Verified boot metadata (slot R)
6A2460C3-CD11-4E8B-80A8-12CCE268ED0A
misc
1D75395D-F2C6-476B-A8B7-45CC1C97B476
emmc-boot1
900B0FC5-90CD-4D4F-84F9-9F8ED579DB88
emmc-boot2
B2B2E8D1-7C10-4EBC-A2D0-4614568260AD
Minix filesystem
481B2A38-0561-420B-B72A-F1C4988EFC16
Emu68/AmigaOS
A partition that includes Rigid Disk Block[q]
3F82EEBC-87C9-4097-8165-89D6540557C0