There are many reasons for wanting to mount a CD/DVD, perhaps to restore a backup or to access files from someone who only just recently made the transition from floppy.
But for the two most common reasons today.. * Music/Audio discs, containing no filesystem and cannot be mounted. cdio(1) in base can be used to playback and rip audio CD's using the raw device node directly, as can many other ports. * DVD Video discs, which do contain a filesystem.. but with encrypted files. There is libdvdread/libdvdcss, also in ports, and runtime dependencies for many media players, and like cdio work by directly manipulating the device. -Bryan.
