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Re: checking integrity of already written CD/DVD

On Sun,29.Mar.09, 20:28:44, Angelin Lalev wrote:
> Greetings,
> I'm about to lend my entire DVD set with Debian 5.0 to a friend. I
> have no doubt in my friend, but this occasion awakened the curious
> person in me and here is the question:
> Is there a way to check that the DVD I give to somebody is the same
> that the DVD I'll get later?
> More complex:
> Is there a way to check a written DVD against the checksum of the iso
> image written on it?
> (For example to check that Debian 5.0 Lenny Official i386 Binary-1 DVD
> I got from someone has written on it
> exactly the .iso file from debian.org)

$ md5sum /dev/dvd

This should result in *exactly* the same checksum as the iso (which 
should be the same as the one published by Debian). If they don't match 
the DVD was not written correctly.

If you can't explain it simply, you don't understand it well enough.
(Albert Einstein)

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