ottosch/restore-grub.md

Created February 25, 2025 02:02

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How to restore GRUB using Arch Linux ISO

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restore-grub.md

How to restore GRUB using Arch Linux ISO

Partitions

/dev/sda1: ESP (EFI System Partition)
/dev/sda2: system + home
/dev/sda3: swap

Script

Boot from Arch liveCD, then:

mount /dev/sda2 /mnt
mount /dev/sda1 /mnt/boot
arch-chroot /mnt
grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
grub-mkconfig -o /boot/grub/grub.cfg
exit
mount -R /mnt
reboot