Backing up the Bootsector

If you going to play around with Bootloaders, it is wise to make a backup of your bootsector. Use the handy dd tool to make a backup.

dd if=/dev/hda of=bootsector.img bs=512 count=1

Make sure to change the drive device name hda to reflect whatever your system's is.

And to restore

dd if=bootsector.img of=/dev/hda