Burning CDs

[Leon Stringer]

On Fri, 2006-01-27 at 14:40 -0500, Thomas Taylor wrote:
> On Friday 27 January 2006 12:23, John Reiser wrote:
> > Instead of using sha1sum to verify, use
> >   dd if=/dev/cdrom bs=2k  |  cmp - FC5-test1-i386-discN.iso
> > and check the return code from cmp only, ignoring any complaints
> > from dd.
> >
> 
> Indeed a better way to compare the iso image to a burned CD.
> 

So I try this with an ISO burned through the GNOME interface and get:

	dd: reading `/dev/cdrom': Input/output error
	141148+0 records in
	141148+0 records out
	289071104 bytes (289 MB) copied, 138.624 seconds, 2.1 MB/s
	cmp: EOF on -


And I try this with an ISO burned with cdrecord and get:

	dd: reading `/dev/cdrom': Input/output error
	228592+0 records in
	228592+0 records out
	468156416 bytes (468 MB) copied, 149.532 seconds, 3.1 MB/s
	cmp: EOF on -

The results are very different. How do I tell it's OK?