Create iso from CD/DVD linux ubuntu fedora debian

Create iso from CD/DVD linux Ubuntu fedora debian

----------- If CD/DVD drive is /dev/hdc

dd if=/dev/hdc of=/home/saju/file.iso

or

cat /dev/hdc > /home/saju/file.iso

----------- If CD/DVD drive is /dev/scd0

dd if=/dev/scd0 of=/home/saju/file.iso

or

cat /dev/scd0 > /home/saju/file.iso