Translations:GRUB/Restore the GRUB Bootloader/8/en

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Chroot environment

Chroot is a method to restrict various tasks to a restricted area e.g. package installation and other system maintenance tasks. Follow the link to read more about chroot on the Arch wiki.

Identify system partitions

From the above we assume you have identified the relevant partitions on your system and this document will refer the partitions as follows. Partitions not needed for this kind of maintenance has intentionally been left out (e.g. home, swap).

Partition Usage Comment
/dev/sdyA EFI system Required for EFI system and mounted on /boot/efi
/dev/sdyB boot Optional but mounted on /boot The primary use is when GRUB cannot write to / (eg. f2fs)
/dev/sdyC root Required and for the root filesystem and mounted on / - usually formatted using ext4
Info
If your system is a BIOS/MBR system there is no efi partition. If your system is a BIOS/GPT system you will find an unformatted partion size 1-32MB of the bios boot partition type.