Nikos Chantziaras <rea...@arcor.de> wrote:

> Grant wrote:
> > I'd like to back up the files on my DVD-Audio discs.  The files are
> > encrypted and I don't want to decrypt them, I just want to back them
> > up.  I'm getting I/O errors when I try to cp the files, and I'm
> > guessing it's because of the encryption.  Does anyone know of a method
> > that would back these discs up in their encrypted form?
>
> That doesn't work that way.  What you get is actually garbage and is not 
> "encrypted" (otherwise you would be able to copy it to another DVD). 
> Creating a copy of an audio DVD which is itself encrypted would defeat 
> the purpose of a copy protection, since even though encrypted, it's 
> still a copy, and the protection wants to prevent that.  If you can copy 
> it, it wouldn't be protected :P

There is no copy protection on a DVD. There is however a region specific
_usage_ "protection".

You should be able to copy the DVD using dvdbackup.

Jörg

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