Re: Obtaining a CD image

[Alexander Frolkin <alexander@frolkin.demon.co.uk>]

On Fri, Nov 03, 2000 at 12:06:37PM -0800, Seth Arnold wrote:
> > I've thought of that, but how do I find out the value I need for count= ?
> Whatever the size of the CD is -- if the CD is 640 megs, 640, if it is
> 720 megs (which I think I have heard of before :) then 720...

I think I've got this more-or-less figured out.

This works:

cat /dev/rcd0c > cd_image

(although it does give me an 'invalid argument', I think, towards the end, but
it seems to be fine.)

I've also found readcd in the cdrecord tarball which also works, without
errors.

What's interesting is that I've noticed that cat /dev/rcd0c and cat /dev/cd0c
give different results. Is this supposed to happen? Also, why can't I dd rcd0c,
while I can dd cd0c (I get 'invalid argument' with rcd0c)?


Thanks,
Alexander