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GUID Partition Table
GUID Partition Table
(
GPT
) is a standard for the layout of the
partition table
on a physical
hard disk
, using
globally unique identifiers
(GUID). Although it forms a part of the
Unified Extensible Firmware Interface
(UEFI) standard (
Unified EFI Forum
proposed replacement for the
PC
BIOS
), it is also used on some BIOS systems because of the limitations of
master boot record
(MBR) partition tables, which use 32 bits for storing
logical block addresses
(LBA) and size information on a traditionally 512 byte
disk sector
.
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