Re: [gentoo-user] Reading a DVD as an ISO image

["José Romildo Malaquias" <j.romildo@gmail.com>]

On Tue, Nov 17, 2009 at 12:02:12PM +0100, Joerg Schilling wrote:
> Daniel Pielmeier <billie@gentoo.org> wrote:
> 
> > 2009/11/17 Sebastian Beßler <webmaster@darkmetatron.de>:
> > >> What about mounting the iso and create it again from the mountpoint.
> > >
> > > That he has deleted the iso?
> >
> > Well, he then can create the iso again from the mounted DVD, without
> > readcd or dd, but with the same program (mkisofs?) he used before.
> 
> This works only in case that the OS correctly supports all features in the 
> filesystem. As Linux does not support hard links correctly, callig mkisofs
> again will not always result in an identical image and the new image might
> not fit on the medium....

I have mounted the disc using the udf filesystem and then I have
recreated the iso from the mounted disc using mkisofs with the same
arguments. This time at least the new iso has the same size as the
original one (while with dd and readcd the obtained iso is a little
bigger). But the iso is still not identical to the original one.

Romildo