CD, CDROM

Create cd Image

isoinfo -d -i /dev/cdrom | grep -i -E 'block size|volume size'
dd if=/dev/cdrom of=test.iso bs=<block size from above> count=<volume size from above>
viewing the current progress status:
killall -USR1 dd
watch -n 1 killall -USR1 dd

http://hyperlogos.org/page/Recovering-damaged-CDs-or-DVDs-Linux