Difference between revisions of "HowTo Backup And Restore The Master Boot Record (MBR)"
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| − | * '''Backup''' the '''[http://en.wikipedia.org/wiki/Master_boot_record MBR]''' on disk: "'''sda'''" to: "'''/var/nst/backup/mbrbackup'''" | + | * '''Backup''' the '''[http://en.wikipedia.org/wiki/Master_boot_record MBR]''' on disk: "'''sda'''" to file: "'''/var/nst/backup/mbrbackup'''" |
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<div class="userInput"><span class="prompt">[root@probe ~]# </span>mkdir -p /var/nst/backup</div> | <div class="userInput"><span class="prompt">[root@probe ~]# </span>mkdir -p /var/nst/backup</div> | ||
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| − | * '''Restore''' the '''[http://en.wikipedia.org/wiki/Master_boot_record MBR]''' from: "'''/var/nst/backup/mbrbackup'''" on to disk: "'''sda'''" | + | * '''Restore''' the '''[http://en.wikipedia.org/wiki/Master_boot_record MBR]''' from file: "'''/var/nst/backup/mbrbackup'''" on to disk: "'''sda'''" |
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<div class="userInput"><span class="prompt">[root@probe ~]# </span>dd if=/var/nst/backup/mbrbackup of=/dev/sda bs=512 count=1</div> | <div class="userInput"><span class="prompt">[root@probe ~]# </span>dd if=/var/nst/backup/mbrbackup of=/dev/sda bs=512 count=1</div> | ||
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</pre> | </pre> | ||
</div> | </div> | ||
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| + | It is a good idea to save the backed up '''[http://en.wikipedia.org/wiki/Master_boot_record MBR]''' file to removable storage like a '''USB''' flash drive. | ||
Latest revision as of 11:02, 26 October 2009
This HowTo shows how to use the dd utility to backup and restore the Master Boot Record (MBR).
- Note: This HowTo assumes that the MBR to backup and restore is located on disk: "sda".
- Backup the MBR on disk: "sda" to file: "/var/nst/backup/mbrbackup"
[root@probe ~]# mkdir -p /var/nst/backup
[root@probe ~]# dd if=/dev/sda of=/var/nst/backup/mbrbackup bs=512 count=1
1+0 records in 1+0 records out 512 bytes (512 B) copied, 5.6701e-05 s, 9.0 MB/s [root@probe ~]#
- Restore the MBR from file: "/var/nst/backup/mbrbackup" on to disk: "sda"
[root@probe ~]# dd if=/var/nst/backup/mbrbackup of=/dev/sda bs=512 count=1
1+0 records in 1+0 records out 512 bytes (512 B) copied, 4.6066e-05 s, 11.1 MB/s [root@probe ~]#
It is a good idea to save the backed up MBR file to removable storage like a USB flash drive.
