Making an ISO from a CD

Malcolm Kay malcolm.kay at
Tue Nov 18 01:23:21 PST 2003

On Tue, 18 Nov 2003 09:38, Bill Campbell wrote:
> On Mon, Nov 17, 2003, Max Clark wrote:
> >Hi all,
> >
> >How do you create an ISO from a cd as the source? Obviously when the ISO
> > where to be burned I would like it to be identical to the original cd.
> dd if=/dev/$cdrom of=tmpfile.iso
> Where $cdrom is the appropriate device name for your CD.

This will probably report an invalid argument and fail. The default block size 
is too small for CDs. For ISO9660 data CDs add the argument 'bs=2048'
(Not sure what it should be for audio CDs)


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