Updating bios from cd

Usually the post-MBR gap (after the 512 byte MBR region and before the start of the first partition) in many MBR (or 'msdos' disklabel) partitioned systems is 31 Ki B when DOS compatibility cylinder alignment issues are satisfied in the partition table.However a post-MBR gap of about 1 to 2 Mi B is recommended to provide sufficient room for embedding GRUB's (FS#24103).If you are installing Arch Linux on an EFI-capable computer with an installed operating system, like Windows 10 for example, it is very likely that you already have an ESP.To find out the disk partition scheme and the system partition, use and you will have the additional ability of being able to boot from the drive in case EFI variables are reset or you move the drive to another computer.The latter had become too difficult to maintain and GRUB was rewritten from scratch with the aim to provide modularity and portability [1].

To have the viewable partitions begin at the base consider adding this partition last.

By default the generation scripts automatically add menu entries for Arch Linux to any generated configuration.

See Multiboot USB drive#Boot entries and #Dual-booting for custom menu entries for other systems.

A boot loader is the first program that runs when a computer starts.

It is responsible for selecting, loading and transferring control to an operating system kernel.

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The main task here is finding the EFI partition and running the bootloader from it.

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