On Thu, Dec 23, 2010 at 13:07, Robert W <[email protected]> wrote:
> I've searched the Ubuntu forums for an answer and couldn't find one, so I
> figured I'd ask here instead.
>
> If I use DD to back up my USB drive to a file, should I expect the checksum
> of the image file created to be the same as the checksum produced by the
> device (for instance, /dev/sdb)?
>
> I've been getting different checksums and I wanted to know if it was because
> of an error writing the image file, or because of something else.
Assuming that you are not *using* the USB device at the time, you
should get the same values; I often use that to verify that a copy of
a disc is correct.
Regards,
Daniel
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