Linux: error: file '/grub/i386-pc/normal.mod' not found

What you need to do is install GRUB 2. To do this you need to boot to the live instance, mount your root partition and install.

From a live instance, find the partition on which your root partition is loaded. GParted will tell you this, or you could use

sudo fdisk -l

Go for the partition in which ubuntu is installed.

Once you have your partition you need to mount it. Assuming the root partition is on /dev/sda5, that’d be:

sudo mount /dev/sda5 /mnt

Then install GRUB 2

sudo grub-install /dev/sda --root-directory=/mnt

reboot

By: J Morrissey