Various disk image formats, like the *.cdd and *.img which wee both used by various versions of CloneDisk, can be normally converted between each other using a dedicated disk cloning or disk image management tools. So whilst possible, nowadays you are better of with just common ISO.
Convert CloneCD disk image to CloneCD image file.
We have found 5 software records in our database eligible for .ccd to .img file format conversion.
Microsoft Windows software - convert ccd to img on Windows
A CD/DVD cloning tool for Windows
Convert from ccd file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned ccd to img. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A disk burning and ripping software
A highly specialized and easy to use CD, DVD and blu-ray data recovery tool
A powerful CD/DVD-image-file editor, CD burner, and CD/DVD-backup tool
One of the disk image handling utilities and the default program for ISZ images