CloneCD is proprietary. I have a bunch of images that were created with in. Inside of the .CCD file it says.
How do I mount this?
To mount a .ccd file created with CloneCD, first translate the file to an .iso file,
ccd2iso MyImage.img MyImage.iso
Then mount the .iso file,
sudo mkdir /tmp/disk
mount -o loop -t iso9660 ./MyImage.iso /tmp/disk/
In many cases ccd2iso wont work. Try "acetoneiso".
sudo apt install acetoneiso