Help to restore a dd image file back to the hard drive

[Dave_Bechtel]

Are you getting an error message? Describe "not working."

1. You must be root, and running from the Knoppix CD.

2. NOTHING on hda should be mounted, including swap.
' swapon -s ' == swap status; ' swapoff /dev/hdaX '
' umount /dev/hda* '

3. ' dd if=/mnt/sdb1/image.dd of=/dev/hda bs=2M '

Note: It may be more useful to image partitions (/dev/hda1) rather than the entire drive.

--You can also compress/uncompress the drive image on the fly:
' dd if=/dev/hda bs=1M |gzip -9 >/mnt/sdb1/image.dd.gz '
' gzip -cd image.dd.gz > /dev/hda ' == Restore

I've read the faqs and can find info on creating images but not of restoring them back to the hard drive.

I have created a dd image file of the complete hard drive /dev/hda on a removeable hard drive
using
dd if=/dev/hda of=/mnt/sdb1/image.dd

Now I am trying to restore the image back to the hard drive as an upgrade went wrong.
However
dd if=/mnt/sdb1/image.dd of=/dev/hda is not working.

I think I have to make hda writeable but I don't know the exact syntax of the command I need.
On the left of the desktop I can find icons for hda1, hda3 and hda7 which are currently on my machine but are currently unmounted.
What exactly do I do here?

Hope someone can help.

Regards
Brian C