Backup & Restore the Master Boot Record
Some days ago I had to recover the Master Boot Record (MBR) of a damaged hard disk.
The MBR is the first 512 bytes of a storage device. It contains an operating system boot loader and the storage device’s partition table.
If you need to make a backup of the MBR type the following command:
dd if=/dev/sda of=/root/mbr.img bs=1 count=512
You only have to change sda with the device name that correponds to your hard disk.
To restore it:
dd if=/root/mbr.img of=/dev/sda bs=1 count=512
And as before, change sda with the device name that corresponds to the hard disk you are going to restore the MBR ...