read cd's but not dvd's?

Søren Schmidt sos at freebsd.org
Sat Nov 4 20:02:50 UTC 2006


Steve Franks wrote:
> Any potential configuration-realted reasons that I can mount cd's just
> fine in my dvd drive (atapi), but not data or movie dvd's (commercial
> and dvd+r's)? I get an 'unrecognized or drive empty' type error. Just
> a bad drive?  It makes the standard spin-up noises and some reading
> sounds after loading a dvd, and it's a fairly new drive.  The faq and
> man pages don't seem to suggest any configuration-realted differences
> between cd & dvd.  They are both iso9660 format, correct?
Yes, but most movie DVD's are copyprotected where you need to perform 
the right woodoo agaist the DVD drive to enabling reading the data.
When you get that far the data might be encrypted as well, needing a 
decrypt before they make sense.

Welcome to the wonderfull world of copy protection :)

-Søren



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