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Diffstat (limited to 'documentation/UEFI general/ESP')
| -rw-r--r-- | documentation/UEFI general/ESP | 17 |
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diff --git a/documentation/UEFI general/ESP b/documentation/UEFI general/ESP new file mode 100644 index 0000000..4780a0d --- /dev/null +++ b/documentation/UEFI general/ESP @@ -0,0 +1,17 @@ +EFI System Partition (Wikipedia) +======================= + +When a computer is booted, UEFI Firmware loads files stored on the ESP to start installed operating systems and various utilities. + +ESP contains: boot loaders or kernel images, device driver files, system utility programs that are intended to be run before an operating system is booted, and data files such as error logs. + + The globally unique identifier (GUID) for the EFI system partition in the GUID Partition Table (GPT) scheme is C12A7328-F81F-11D2-BA4B-00A0C93EC93B, while its ID in the master boot record (MBR) partition-table scheme is 0xEF. Both GPT- and MBR-partitioned disks can contain an EFI system partition, as UEFI firmware is required to support both partitioning schemes. + +UEFI firmware does not execute the code in the MBR, except when booting in legacy BIOS mode through the Compatibility Support Module (CSM) + +a boot loader needs to be stored according to the standard ESP file hierarchy +The EFI system partition is formatted with a file system whose specification is based on the FAT file system and maintained as part of the UEFI specification; therefore, the file system specification is independent from the original FAT specification. + +LINUX +-------- +The mount point for the EFI system partition is usually /boot/efi, where its content is accessible after Linux is booted |