mount /dev/${DEVICE}1 /cdrom 2> /dev/null
if [ -n "$(ls /cdrom/ipfire-*.tbz2 2>/dev/null)" ]; then
echo -n ${DEVICE}1 > /tmp/source_device
mount /dev/${DEVICE}1 /cdrom 2> /dev/null
if [ -n "$(ls /cdrom/ipfire-*.tbz2 2>/dev/null)" ]; then
echo -n ${DEVICE}1 > /tmp/source_device