How do I save a disk image of my laptop hard drive?

[Mark Phillips]

On Friday 06 April 2007 11:42, vodhner at cox.net wrote:

I am glad I checked:

 gunzip -c backup.gz | md5sum

yielded:
6b55a48fa7553a5ce5e71439698774be  -

whereas,

md5sum /dev/hda 

yielded:
493112457580ae24e48021819dd81a8a  /dev/hda

The checksums do not match. 

Any suggestions? I am not sure what I did wrong.

Mark

> Hi, Mark.
>
> ---- Mark Phillips <mark at phillipsmarketing.biz> wrote:
> > Could someone help me verify that the entire hard drive was copied?
>
> You can use something like this to check your saved image file:
>
>   gunzip -c filename.gz | md5sum
>
> The result should match the result of the volume you mirrored:
>
>   md5sum /dev/hda1
>
> Again, hda1 should not be mounted, and should not have been modified at all
> since you did the mirroring.  Unless you thought ahead and took the sum
> before you began.   :-)
>
> There are various refinements in the use of md5sum, but I think what I
> presented would suffice.
>
> Vic
>
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-- 
Mark Phillips
mark at phillipsmarketing.biz
602 524-0376 cell
480 945-9197 fax