"SLC5X: Sound and Video: mkisofs
mkisofs - Creates an image of an ISO9660 filesystem.
The mkisofs program is used as a pre-mastering program; i.e., it
generates the ISO9660 filesystem. Mkisofs takes a snapshot of
a given directory tree and generates a binary image of the tree
which will correspond to an ISO9660 filesystem when written to
a block device. Mkisofs is used for writing CD-ROMs, and includes
support for creating bootable El Torito CD-ROMs.
Install the mkisofs package if you need a program for writing