Re: [OT] Making images from CDs

[joost@topaz.mdcc.cx (Joost Kooij)]

On Tue, Jul 24, 2001 at 12:39:06AM -0400, Thomas J. Hamman wrote:
> First, a simple question:  What is the correct command-line way of
> copying a CD to an image file on the hard drive?  Is a simple "dd
> if=/dev/cdrom of=cd.img" command sufficient?  Or do I need to run

Use cat if you like.  

  cat /dev/cdrom > cd.iso9660

> Now, a tougher problem:  I received an "Input/output error" while trying
> to copy a CD to an image file (using xcdroast, and I also got the error
> while trying dd).  I tried another CD and it worked fine, so I'm
> guessing the problem is the particular CD.  The CD does work fine,
> however.  So, what I'm wondering is whether or not there is anyway
> around such an error, or whether it would be worthwhile to go ahead and
> burn the resulting image and hope it works.

Are you sure it really is fine?  Run:

  find /dev/cdrom -type f -exec cat {} \> /dev/null \;

And watch the system console or log for errors.

Cheers,


Joost