[nmglug] Restoring MBR

[Ravi Kumar]

Hi William,
   This is what you do to restore your MBR  when it  has been
overwritten . I am assuming that you already  have fedora installed 
on your machine to dual boot with windows OS.

1) Take the fedora CD No1 and boot using this CD. You might have to
set your computer to boot from CDROM. Change the relevant settings in
the Bios setup.
2) Once you come to the installation 'boot : '  prompt, type 'linux rescue'
3) Your computer will boot from the CD and Fedora will automatically
detect whether linux is installed on your machine and mount the root
directory of your linux installation from your harddisk into the
/mnt/sysimage (I think that is the location - I forget - anyway the
installer will tell you where it is mounting  your root partition). I
am assuming it is /mnt/sysimage.
4) Now chroot to this location.
      # chroot /mnt/sysimage
5) Lastly restore your grub boot loader to the MBR.

      # grub-install /dev/hda

6) type 'exit' in the command prompt which will reboot your machine.
Once your machine is rebooted, you remove the CD from the CD Drive.
That is it. You have restored your boot loader.

Regards
Ravi
http://linuxhelp.blogspot.com
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On 9/27/05, William D. Nystrom <wdn at lanl.gov> wrote:
> I recently went through the following scenario.
>
> 1.  Formatted partitions on a new hard drive and installed Fedora Core 3.
>
> 2.  Installed Windows XP on one of the partitions which clobbered my MBR.
>
> 3.  Reinstalled Fedora Core 3 because I could not figure out another way
>     to restore my MBR.  I tried the Rescue disk but perhaps I did not know
>     what I was doing.
>
> Is there an easy way to restore the MBR if it has been clobbered by a
> Windows install?  I'm using grub as my boot loader.