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Tip #803   MBR (Master Boot Record) backup & restore

Backup your MBR:
dd if=/dev/sda of=/root/mbr.img bs=1 count=512

Restore MBR:
dd if=/root/mbr.img of=/dev/sda bs=1 count=512

Restore only bootstrap (part of MBR):
dd if=/temp/mbr.img of=/dev/sda bs=1 count=446

Restore only partition table (part of MBR):
dd if=/temp/mbr.img of=/dev/sda skip=446 seek=446 bs=1 count=64

If you want to learn more about mbr check here: http://en.wikipedia.org/wiki/Master_boot_record
 
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