Why neither my CD-ROM drive nor a music CD player can play the 80-minute CD-R music disc I burned?
Compared with 74-minute (650 MB) discs, the new 80-minute (700 MB) discs actually fully use the functions of the optical drives (some optical drives are not bounded by the 74-minute / 650 MB limitations). But not all optical drives are up to this standard, and there are no simple methods to tell which optical drive is up to, or not up to, this standard.