On Thu, 23 Oct 2008 02:35:25 -0400, "John L. Templer" <[EMAIL PROTECTED]> wrote:
> Polytropon wrote:
> > % dd if=/dev/acd0t01 of=track01.cdr bs=2352
>
> Very cool! I have a few questions though. I notice this doesn't work
> for my Plextor CD writer.
What, dd doesn't work from Plextor writer? I had (or, still have)
a Plextor CD writer which is SCSI, so I just have to change the
command in order to read from the correct device, which is /dev/cd0
for the first SCSI CD drive:
% dd if=/dev/cd0t01 of=track01.cdr bs=2352
Of course, you would have to change other commands in order to get
this correct, for example:
% cdcontrol -f /dev/cd0 info
> I assume this is because CD and DVD drives
> have different drivers?
Maybe, but I think these basic things rely on the same commands
internally.
> Also, does this use libparanoia or something
> similar to extract "recalcitrant" tracks?
No, dd reads block-wise. There's dd_rescue which is able to read
from defectively manufactured media (we call them "Un-CDs" or
"Un-DVDs" in Germany).
Another option, by the way, is to use cdrdao. It has the read
command in combination with a paranoia level switch which can be
adjusted in order to read mentioned media. As far as I remember,
you need to have the atapicam facility in your kernel (custom
compile kernel or module) in order to access ATAPI devices just
like SCSI devices.
% camcontrol devlist
will then show you which device equals /dev/cd0, e. g. 0,0,0
(1st SCSI controller, 1st device, 1st LUN).
If I did misunderstand the question, just post another one. :-)
(English is not my native language.)
--
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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