How to Restore/Reinstall GRUB Bootloader in Arch Linux

Sometimes disaster may happen and your GRUB bootloader may stop working. In this situation you may need to reinstall/restore GRUB bootloader. For this you need a bootable drive with Arch Linux.

So if you don’t have Arch Linux download iso file and create one.

Recover GRUB Bootloader in Arch Linux

• Insert and boot your Arch Linux installation media.
• Select Arch Linux archiso x86_64 UEFI CD.
• If you want to connect to WiFi then you can connect using # wifi-menu, but it is optional.
• After that you need to mount the root partition of Arch Installation to /mnt.
• To check your boot/EFI and root partitions use, # fdisk -l
• Then mount your root partition to /mnt, # mount /dev/sda4 /mnt
• chroot using, # arch-chroot /mnt /bin/bash
• Then you need to mount boot partition, mount it to /boot/efi, # mount /dev/sda2/ /boot/efi
• You can check if all are mounted using, # lsblk -l
• Now install GRUB, # grub-install --target=x86_64-efi --efi-directory=<em>/boot/efi</em> --bootloader-id=GRUB
• Then, generate grub.cfg, # grub-mkconfig -o /boot/grub/grub.cfg
• Now you are done, # exit, # reboot.

If you have problems then feel free to comment.