Create ISO Image from CD/DVD on Linux with dd or dd_rescue

Prerequisites

dd or dd_rescue utilities installed

dd

dd if=/dev/cdrom of=/home/user/image.iso

if = input file

of = output file

dd_rescue

Same operation with dd_rescue

dd_rescue /dev/cdrom /home/user/image.iso

• If there are errors reading the input file dd_rescue does not abort (unless the user specify a maximum error number)
• dd_rescue does not truncate the output file, unless asked to