Create Backup Of a Directory in ISO Format
#mkisofs -J -r -T -o /home/svk.iso /home/svk
The above command take the backup of /home/svk directory and save the file in /home with a file name svk.iso
Mount ISO Images
# mount -o loop /home/svk.iso /media/
The above command mount the svk.iso file to /media directory.
Create ISO image of CD/DVD
# dd if=/dev/hdc of=/tmp/svk.iso
The above command create an ISO image of the CD in /tmp directory as filename svk.iso
(If the CD is a bootble one then the image will also bootable)