CDfs is a virtual Linux file system that provides access to individual data and audio tracks on Compact Discs. A Compact Disc mounted with the `CDfs` driver appears as a collection of files, each representing a single track. It supports the following track types: CDfs is not included in the mainline Linux kernel, but is instead distributed as GP.....
filing system used for accessing CD-ROMs
CD-ROM File System, details ...
Compact Disc File System [Microsoft]