DAEMON Tools Lite will back up your physical CD/DVD/HD DVD/Blu-ray discs into virtual discs or so-called disc image files.
These can run directly on your hard drive and work with images created by other burning programs. DAEMON Tools supports a variety of image types. Use the CD/DVD image converter to have one format image in your image catalog.
DAEMON Tools is an advanced application for Microsoft Windows, which provides one of the industry's best optical media emulations.
The free version contains ads. For $5.99+ they can be removed.