構造体定義書 - gpt

struct gpt_header

No.	名称	属性	説明
1	gpt_header
	signature	uint64_t	"EFI PART"
	revision	uint32_t
	header_size	uint32_t	usualy 92 bytes
	header_crc32	uint32_t	checksum of header with this
	reserved1	uint32_t
	my_lba	uint64_t	location of this header copy
	alternate_lba	uint64_t	location of the other header copy
	first_usable_lba	uint64_t	lirst usable LBA for partitions
	last_usable_lba	uint64_t	last usable LBA for partitions
	disk_guid	efi_guid_t	disk UUID
	partition_entries_lba	uint64_t	always 2 in primary header copy
	num_partition_entries	uint32_t
	sizeof_partition_entry	uint32_t
	partition_entry_array_crc32	uint32_t

gpt_header