Reinstall GRUB using Ubuntu Live CD

Few days back I installed Ubuntu on Machine which already had Windows installed. Yes your guess is correct thats basically "Dual boot".


The issue I had faced was on machine startup it starts Windows only and not been able to access Ubuntu, which was installed correctly. I searched many forums and articles, then I came to know about re-installation of GRUB 


GRUB is a GRand Unified Bootloader. For more info, Please Visit: http://www.gnu.org/software/grub/.


So I thought I should share the info with all.  Below are the steps required to perform.


1. Boot into the Live Ubuntu 9.04 CD
2. Open Terminal 
3. Type command:  sudo grub [This will give you grub> prompt/shell]
4. On Grub Prompt Type below commands on by one.
find /boot/grub/stage1 [This will give you the location as result. In my case the location was (hd1,2)]
root (hd?,?) [? = the values returned to you as result of above command]
setup (hd?)
quit


That is it. When you reboot, you will have the grub menu at startup with the list of Operating System installed.
Choose the OS to boot.

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