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Problem using dd to clone a hard disk with bad sectors.

Subject: Problem using dd to clone a hard disk with bad sectors.
Date: Thu, 16 Feb 2006 18:31:42 +0800

Hi all.

I'm trying to properly clone a 4.3GB (it's old, I know) hard disk which unfortunately has a lot of bad sectors.
I am using Helix 1.7 as an operating environment, not mounting the old drive at all.
I used the command:


dd if=/dev/hdb of=/mnt/hda7/image.dd conv=noerror,sync

My problem is that the md5 hash of the image file is different from that of the original HD (acquired via the command: dd if=/dev/hdb conv=noerror,sync | md5sum > /mnt/hda7/orig_disk_md5sum.txt)

Can anyone please enlighten me as to what I'm doing wrong?

Thanks in advance.


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