[PLUG] Verifying a cd-r image

Rich Shepard rshepard at appl-ecosys.com
Thu Oct 24 23:17:10 UTC 2002


On Thu, 24 Oct 2002, Bear Giles wrote:

> Hmm, maybe I misunderstood the question.
> 
> If you want to verify that you wrote the data to the CD-R correctly,
> check the MD5 on the ISO image.
> 
> If you want to verify that the ISO image was properly generated, run
> 
> # find . -type f -size +0 -print0 | xargs -0 md5sum > MD5SUMS
> 
> (or something like that) on your original data, then when you mount
> the ISO image (ideally via the loopback device on the hard disk image
> since it's *much* faster than reading the CD, esp. if the disk layout
> isn't optimized to minimize seeks) run
> 
> # md5sums -c /cdrom/MD5SUMS

  Thanks, Bear.

Rich





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