Difference between revisions of "Some basics of MBR v/s GPT and BIOS v/s UEFI/ru"

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== GPT ==
== GPT ==


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.
GUID Partition Table (GPT) - это стандарт компоновки таблицы разделов на физическом жестком диске с использованием глобально уникальных идентификаторов (GUID). Хотя она является частью стандарта Unified Extensible Firmware Interface (UEFI) (унифицированный интерфейс EFI, предложенный Форумом для замены BIOS ПК), она также используется в некоторых системах BIOS из-за ограничений таблицы разделов главной загрузочной записи (MBR), используемой 32 бита для хранения адресов логических блоков (LBA) и информации о размере.


MBR-based partition table schemes insert the partitioning information for (usually) four "primary" partitions in the master boot record (MBR) (which on a BIOS system is also the container for code that begins the process of booting the system). In a GPT, the first sector of the disk is reserved for a "protective MBR" such that booting a BIOS-based computer from a GPT disk is supported, but the boot loader and O/S must both be GPT-aware. Regardless of the sector size, the GPT header begins on the second logical block of the device. [http://en.wikipedia.org/wiki/GUID_Partition_Table]
MBR-based partition table schemes insert the partitioning information for (usually) four "primary" partitions in the master boot record (MBR) (which on a BIOS system is also the container for code that begins the process of booting the system). In a GPT, the first sector of the disk is reserved for a "protective MBR" such that booting a BIOS-based computer from a GPT disk is supported, but the boot loader and O/S must both be GPT-aware. Regardless of the sector size, the GPT header begins on the second logical block of the device. [http://en.wikipedia.org/wiki/GUID_Partition_Table]
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