Backup your hard drive with dd

sudo dd if=/dev/sda of=/media/disk/backup/sda.backup
This will create an exact duplicate image of your hard drive that you can then restore by simply reversing the "if" & "of" locations. sudo dd if=/media/disk/backup/sda.backup of=/dev/sda Alternatively, you can use an SSH connection to do your backups: dd if=/dev/sda | ssh user@ssh.server.com dd of=~/backup/sda.backup

15
By: bandit36
2009-02-27 20:23:37

These Might Interest You

  • This is to pull all the saved S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) information from a hard drive. This can give you an idea of the nature and extent of an issue on a failing hard drive. Show Sample Output


    1
    smartctl --attributes /dev/sda
    ShadowCat8 · 2011-10-13 20:21:03 0
  • A dear friend of mine asked me how do I copy a DVD to your hard drive? If you want to make a copy of the ISO image that was burned to a CD or DVD, insert that medium into your CD/DVD drive and (assuming /dev/cdrom is associated with your computer?s CD drive) type the following command


    8
    dd if=/dev/cdrom of=whatever.iso
    0disse0 · 2009-09-05 09:19:41 3
  • 'data' is the directory to backup, 'backup' is directory to store snapshots. Backup files on a regular basis using hard links. Very efficient, quick. Backup data is directly available. Same as explained here : http://blog.interlinked.org/tutorials/rsync_time_machine.html in one line. Using du to check the size of your backups, the first backup counts for all the space, and other backups only files that have changed. Show Sample Output


    1
    rsync -av --link-dest=$(ls -1d /backup/*/ | tail -1) /data/ /backup/$(date +%Y%m%d%H%M)/
    dooblem · 2010-08-05 19:36:24 0

  • -8
    ls *.jpg | xargs -n1 -i cp {} /external-hard-drive/directory
    techie · 2013-05-09 08:33:01 2

What Others Think

If you zero out the blank space first with :dd if=/dev/zero of=/tmp/delete.me bs=8M; rm delete.me and then use this command to gzip it, you get great space savings: dd if=/dev/hda conv=sync,noerror bs=64K | gzip -c > /mnt/sda1/hda.img.gz
ozymandias · 486 weeks ago
@ozymandias, I like the zeroing out of unused blocks... crude, but useful. As for backing up a filesystem that's not broken in some way, you'd better of using dump or xfsdump.
bartman · 486 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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