Save and Restore MBR and Partition

Recently I had a problem with my Windows Installation on the second disk which writes its own MBR in the disk. I had reinstalled Windows and several applications but after one day of work and one of those reboots the computer only reponded with the message “no disk found” or similar. I checked with the other disk containing the linux system, but the harddisk was there and all files seemed to be ok. So somehow the mbr was damaged by – what ever. It could be fixed with the command fixmbr from the Windows Recovery System (booted with the installation cd) To habe the MBR backuped I found the following solution using dd.
Other uses of dd are to delete the MBR
Backup a Partition
Restore the Partition