Repairing GRUB on Linux

Have you ever lost your GRUB loader because overwritten by Windows loader ? It’s happen to me today, and I want to recovery it! It’s not hard to do, you just need a Linux live CD/DVD to recovery your GRUB and these commands below.

• First, boot your live linux and open the terminal.

• Make sure you are login into root. If you’re not, type sudo suand type your password .

• Type fdisk -lto show all your harddisk drive partition list.

• Search for your linux partition and remember it ! example my linux is at /dev/sda5

• okay then. I should mount it, so type mount /dev/sda5/ /mnt

• You should mount another system components by type this :

• mount –bind /dev/ /mnt/dev

• mount –bind /proc/ /mnt/proc

• mount –bind /sys/ /mnt/sys

• Now, set your new root, type chroot /mnt

• Type update-grubto check if my Windows loader is detected too.

• To install grub, type grub-install /dev/sda

• Okay, thats all, now try to reboot your computer, type reboot.

Oh , i tried this scenario also ! I try to delete the /boot/grub folder and try to recovery it, simple, just type grub-install /dev/sda and it will be created again by GRUB.

And it works perfectly on my computer, may it will help you someday.