Re-install GRUB from Live Recovery

A simple way to re-install the GRUB bootloader from our Linux Recovery Tool or any Linux LiveCD, in 5 simple steps:

1. Boot the Linux Live Recovery Tool.
2. Mount the root / filesystem, /proc/, /dev/, and /sys/.
3. Chroot into the mounted filesystem.
4. Install GRUB.
5. Reboot.

Example:

mount /dev/sda1 /mnt
mount -t proc none /mnt/proc
mount -o bind /dev/ /mnt/dev
mount -t sysfs sys /mnt/sys
chroot /mnt/ /bin/bash
grub-install /dev/sda

sync && reboot