How well do 90-minute and 99-minute CD-R blank discs work?
Small quantities of 90-minute and 99-minute blank discs have appeared, but since their introduction in late 2000 they haven’t become as commonplace as other lengths. Indications are that many recorders and some software don’t really work with the longer discs. The discs have capacity of roughly 791MB (90 min) and 870MB (99 min). However, all the capacity in the world won’t help you if you can’t read the disc back. If you’re interested in larger but incompatible discs, and don’t want to pay the premium imposed by DVD-R, read about DD-R/DD-RW in section (2-37) and ML in section (2-39). CD time stamps are two digits (binary coded decimal, in case you were wondering), so exceeding 99 minutes isn’t possible. You could, in theory, declare there to be 99 seconds in a minute and 99 sectors per second, but that would break just about everything that tried to read one. The limits of the specifications are being pushed at 80 minutes and even harder at 90, so don’t expect much more out of CD-R. So
