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Vijay
Asked: 2018-10-21 08:15:52 +0800 CST

Removed grub by accident from via apt

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I removed grub fully via apt

 sudo apt purge grub-pc grub-common

I was going to reinstall via apt

 sudo apt install grub-pc grub-common

but my UPS failed and the PC shut-down. Now I am stuck. No grub nothing. Live cd shows no /boot/grub/grub.cfg

What to do?

Thanx in advance.

grub2 boot

1 Answers

  1. Best Answer
    • Backup
    • Boot from live CD, DVD or USB drive

    • Mount the partition your Ubuntu Installation is on. If you are not sure which it is, launch GParted (included in the Live CD) or open a terminal (Ctrl+Alt+T) and use the following command:

      sudo fdisk -l

      and find out. It is usually a EXT4 Partition. Replacing the XY with the drive letter, and partition number, run these commands: 

      sudo mount /dev/sdXY /mnt
sudo mount /dev/sdXZ /mnt  
sudo mount --bind /dev /mnt/dev 
sudo mount --bind /proc /mnt/proc 
sudo mount --bind /sys /mnt/sys 
sudo chroot /mnt 
sudo apt install grub-pc grub-common
sudo grub-install /dev/sdX
sudo update-grub
exit
sudo umount /mnt/dev 
sudo umount /mnt/proc 
sudo umount /mnt/sys 
sudo umount /mnt

    • Shut down and turn your computer back on, and you will be met with the default Grub2 screen.

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