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Diffstat (limited to 'doc/README.gpt')
| -rw-r--r-- | doc/README.gpt | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/doc/README.gpt b/doc/README.gpt index 59fdeebfe8..35902ce0c8 100644 --- a/doc/README.gpt +++ b/doc/README.gpt @@ -31,7 +31,8 @@ More often UUID is displayed as 32 hexadecimal digits, in 5 groups, separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters (32 digits and 4 hyphens) -For instance, GUID of Linux data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 +For instance, GUID of Basic data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 +and GUID of Linux filesystem data: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 Historically there are 5 methods to generate this number. The oldest one is combining machine's MAC address and timer (epoch) value. @@ -170,6 +171,43 @@ To restore GUID partition table one needs to: 2. From u-boot prompt type: gpt write mmc 0 $partitions +Partition type GUID: +==================== + +For created partition, the used partition type GUID is +PARTITION_BASIC_DATA_GUID (EBD0A0A2-B9E5-4433-87C0-68B6B72699C7). + +If you define 'CONFIG_PARTITION_TYPE_GUID', a optionnal parameter 'type' +can specify a other partition type guid: + + "partitions=uuid_disk=...;name=u-boot,size=60MiB,uuid=...; + name=kernel,size=60MiB,uuid=..., + type=0FC63DAF-8483-4772-8E79-3D69D8477DE4;" + +Some strings can be also used at the place of known GUID : + "system" = PARTITION_SYSTEM_GUID + (C12A7328-F81F-11D2-BA4B-00A0C93EC93B) + "mbr" = LEGACY_MBR_PARTITION_GUID + (024DEE41-33E7-11D3-9D69-0008C781F39F) + "msft" = PARTITION_MSFT_RESERVED_GUID + (E3C9E316-0B5C-4DB8-817D-F92DF00215AE) + "data" = PARTITION_BASIC_DATA_GUID + (EBD0A0A2-B9E5-4433-87C0-68B6B72699C7) + "linux" = PARTITION_LINUX_FILE_SYSTEM_DATA_GUID + (0FC63DAF-8483-4772-8E79-3D69D8477DE4) + "raid" = PARTITION_LINUX_RAID_GUID + (A19D880F-05FC-4D3B-A006-743F0F84911E) + "swap" = PARTITION_LINUX_SWAP_GUID + (0657FD6D-A4AB-43C4-84E5-0933C84B4F4F) + "lvm" = PARTITION_LINUX_LVM_GUID + (E6D6D379-F507-44C2-A23C-238F2A3DF928) + + "partitions=uuid_disk=...;name=u-boot,size=60MiB,uuid=...; + name=kernel,size=60MiB,uuid=...,type=linux;" + +They are also used to display the type of partition in "part list" command. + + Useful info: ============ |
