unable to dd dvd

Patrick Asselman iceblink at seti.nl
Mon Apr 29 10:38:17 UTC 2013

On 2013-04-28 03:40, JD wrote:
> Tried multiple dvd drives.
> dd if=/dev/sr0 of=dvd.iso bs=2k
> always results  in
> dd: reading `/dev/sr0': Input/output error
> 1+1 records in
> 1+1 records out
> Tried on sr1, and sr2  all fail in the same way.
> And yet the movie plays just fine with vlc and smplayer!!
> This the first time I see this.
> I never had this issue on Fedora.

Could it be that the DVD is copyrighted and has intentionally corrupt 
sectors on it?
The media player simply plays the list of sectors given to it, so it 
will never encounter those bad sectors, whereas dd will attempt to read 
all sectors, so it will run into problems.

Best regards,
Patrick Asselman

More information about the ubuntu-users mailing list