Backing Up the MBR

It is easy to do this using the dd command. Since the MBR of a PC’s hard disk resides in the first 512 bytes of the disk, you can easily copy the first 512 bytes to a file (or to a floppy disk) by typing

[root@fedora-serverA ~]# dd if=/dev/sda of=/tmp/COPY_OF_MBR bs=512 count=1
1+0 records in
1+0 records out