How to make a GRUB boot recovery Disk
    This is a step-by-step tutorial to make a GRUB boot recovery disk if you encounter a grub error and              are stuck at the GRUB rescue screen . Lets begin

1. Download the super grub disk 1.98 by clicking here.
   You will get a iso file of small size
2. Get a writable cd or a dvd
   (I would suggest a cd since the recovery image is only a few MB's)
3. Burn the super disk 1.98 iso to the cd

AAAAAANNNNNDDDD we are done. Now if u encounter any grub problem, just insert the cd and u will get a screen like this , Just select detect any os and you are done.