Re: How to check *CDROM* correctness?

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On Sat, 5 Apr 2003 14:46:43 +0000 (UTC), Brian Schmidt wrote:

> On 5 Apr 2003, David Krider wrote:
> 
> > proper way to do this online somewhere, but I can't find that
> > information now. It was something about doing a dd out to a loopback and
> > using md5sum on that???
> 
> Are you thinking of something like this:
> dd if=/dev/cdrom bs=2048 count=block_count | md5sum
> 
> I believe the block counts for each should be:
> *-disc1.iso = 326656
> *-disc2.iso = 330816
> *-disc3.iso = 248336

Exactly. And even that method can fail with discs burnt in TAO mode
due to run-out sectors at the end. But it doesn't fail when padding
was added.

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