Working with iso images

Create an iso image of a file partition like so:
dd if=/dev/sda1 of=disk_sda1.iso

Create an iso of  a CD like so:
dd if=/dev/cdrom of=cd.iso

To make an iso image with files on a disk, place all the files
in a directory and then execute the following command:
mkisofs -o /tmp/project.iso  /home/fred/projectfiles

You can mount an iso image like so:
mkdir /mnt/project
mount -o loop /tmp/project.iso /mnt/project

cd /mnt/project
ls -l

You may need to specify the type (option t) when mounting an iso image:
mount -o loop -t iso9660 /tmp/project.iso /mnt/project