On Wed, 12 Feb 2014, Todd Walton wrote: > $ dd if=/dev/sr0 of=/home/todd/output.iso > dd: reading '/dev/sr0': Input/output error > 0+0 records in > 0+0 records out > 0 bytes (0 B) copied, 0.00738223 s, 0.0 kB/s > $ > ^ Would seem to indiate you are not root? Lee