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

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 · 502 weeks and 6 days 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 · 502 weeks and 6 days 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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