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Backup your hard drive with dd

Terminal - Backup your hard drive with dd
sudo dd if=/dev/sda of=/media/disk/backup/sda.backup
2009-02-27 20:23:37
User: bandit36
Functions: dd sudo
13
Backup your hard drive with dd

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

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

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

Comment by ozymandias 281 weeks and 5 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.

Comment by bartman 281 weeks and 5 days ago

Your point of view

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