Note: By running any of the following commands you may cause your system to become un-bootable. Best make backups of the MBR prior to trying anything within. Use at your own discretion.
URLs:
http://linuxgazette.net/issue63/okopnik.html
http://www.cgsecurity.org/wiki/TestDisk
http://en.wikipedia.org/wiki/Master_boot_record
Ben Okopnik wrote a good article on the linux gazette site called “Clearing out the Master Boot Record”. I was wanting to [...]