For the recovery of grub follow the following steps :
- Boot your system using Ubuntu Live CD.
- Now using the terminal check the version of grub. In terminal type :
grub-install -v
- Grub2 should display a version number of 1.96 or later.If you don’t have Grub2 installed,you can install it. In terminal type :
sudo apt-get install grub
- Now go to Places and mount your Ubuntu partition.Then Go to boot/grub directory and check for the existence of the file grub.cfg.
- Now switch the terminal.
- If you mounted the right partition then verify by typing :
mount | tail -1
- To make sure this is indeed the Ubuntu boot partition, type in terminal :
ls /media/0d104aff-ec8c-44c8-b811-92b993823444
- Replace ‘0d104aff-ec8c-44c8-b811-92b993823444’ with your UUID which you found earlier.
- The output should be something like this :
config-2.6.18-3-686 initrd.img-2.6.18-3-686.bak System.map-2.6.18-3-686
grub lost+found vmlinuz-2.6.18-3-686
initrd.img-2.6.18-3-686 memtest86+.bin
- Now we just need to reinstall GRUB by specifying the correct directory and the correct drive name.Type in the terminal :
sudo grub-install –root-directory=/media/0d104aff-ec8c-44c8- b811-92b993823444 /dev/sda
- If all went well, you should see something like this :
Installation finished. No error reported.
This is the contents of the device map /boot/grub/device.map.
Check if this is correct or not. If any of the lines is incorrect,
fix it and re-run the script `grub-install’.
(hd0) /dev/sda
- Reboot.Now Grub should be installed and both Ubuntu and Windows should have been automatically detected and listed in the menu.
Parveen Kaur 