EFI_PARTITION_TABLE_HEADER Struct Reference


Data Fields

EFI_TABLE_HEADER Header
EFI_LBA MyLBA
EFI_LBA AlternateLBA
EFI_LBA FirstUsableLBA
EFI_LBA LastUsableLBA
EFI_GUID DiskGUID
EFI_LBA PartitionEntryLBA
UINT32 NumberOfPartitionEntries
UINT32 SizeOfPartitionEntry
UINT32 PartitionEntryArrayCRC32

Detailed Description

GPT Partition Table Header.

Field Documentation

LBA address of the alternate GUID Partition Table Header.

GUID that can be used to uniquely identify the disk.

The first usable logical block that may be used by a partition described by a GUID Partition Entry.

The table header for the GPT partition Table. This header contains EFI_PTAB_HEADER_ID.

The last usable logical block that may be used by a partition described by a GUID Partition Entry.

The LBA that contains this data structure.

The number of Partition Entries in the GUID Partition Entry array.

The CRC32 of the GUID Partition Entry array. Starts at PartitionEntryLBA and is computed over a byte length of NumberOfPartitionEntries * SizeOfPartitionEntry.

The starting LBA of the GUID Partition Entry array.

The size, in bytes, of each the GUID Partition Entry structures in the GUID Partition Entry array. This field shall be set to a value of 128 x 2^n where n is an integer greater than or equal to zero (e.g., 128, 256, 512, etc.).


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