GUID Partition Table

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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 MBR partition tables,
which use 32 bits for storing logical block addresses and size information.

As of 2010, most current operating systems support GPT. Some, including OS X
and Microsoft Windows, only support booting from GPT partitions on systems
with EFI firmware, but FreeBSD and most Linux distributions can boot from GPT
partitions on systems with either legacy BIOS firmware interface or EFI.

Diagram illustrating the layout of GPT scheme. In this example, each logical
block (LBA) is 512 bytes in size, and each partition entry is 128 bytes, and
the corresponding partition entries are assumed to be located in LBA 2-33,
here. LBA addresses that are negative indicate position from the end of the
volume, with

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※ 編輯: dasea2008 (101.0.228.86 臺灣), 04/11/2022 23:42:54
※ 編輯: dasea2008 (210.66.169.48 臺灣), 05/28/2022 19:30:03