Re: ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device

Kiniger
2005-02-15T23:17:31Z

On Tue, Feb 15, 2005 at 03:03:02PM -0500, kernel wrote:
> On Tue, 2005-02-15 at 14:48, Kiniger, Karl (GE Healthcare) wrote:
> > I can confirm that. Creating a correct iso image from a CD is a
> > major pain w/o ide-scsi. Depending on what one has done before the iso
> > image is missing some data at the end most of the time.
> > (paired with lots of kernel error messages)
> >
> > Testing was done here using Joerg Schilling's sdd:
> >
> > sdd ivsize=`isosize /dev/cdxxx` if=/dev/cdxxx of=/dev/null \
> > bs=<several block sizes from 2048 up tried,does not matter>
> >
> > and most of the time it results in bad iso images....
>
> Karl,
>
> what about catting out that device? I.E.,
>
> 'cat /dev/cdxxx > some.iso'
>
> *instead* of using 'dd' (or variants) against it? I've always had good
> results using 'cat' and CDs, avoiding 'dd' and CDs whenever the
> opportunity presents itself.

I dont think this is relevant. cat will probably use stdio which will
do blocking similar to dd (perhaps 4 kB).

Interestingly reading the files off the mounted CD works fine.

Karl

>
> regards,
>
>
> -fd
>
>

--
Karl Kiniger mailto:karl.kiniger@med.ge.com
GE Medical Systems Kretztechnik GmbH & Co OHG
Tiefenbach 15 Tel: (++43) 7682-3800-710
A-4871 Zipf Austria Fax: (++43) 7682-3800-47