Some surprise while "dd-ing" a video DVD...

[dan]

On 18/01/06, Andrea Giuliano <a.giuliano at iccu.sbn.it> wrote:
> Hi!
> I know that a video DVD has an ISO9660 filesystem, just like any data
> DVD or CD (if I'm not wrong). So I thought I could create an ISO image
> of a video DVD using "dd" or "readcd", for instance.

According to http://www.burnworld.com/dvd/primer/filesystem.htm :

"DVD-Video discs use only UDF with all required data specified by UDF
and ISO 13346 to allow playing in computer systems. They do not use
ISO 9660 at all."

Never had any problems myself with dd on DVD's, though i've only tried
it with  Mac OS X disc. I use:

umount /dev/hdc
dd if=/dev/cdrom of=cd.iso

Dan
--
http://www.danicity.co.uk