On Sunday, Jan 18, 2004, at 17:13 Canada/Eastern, John Wilson wrote: > Does anyone know if there's a way to tell the maximum recording speed > of a blank, unmarked CD-R disk? Not really. The issue is actually more complex than it appears. (For more details, have a look at <http://www.osta.org/technology/cdqa.htm>.) Your best bet is probably to use a tool such as Roxio Toast, which estimates the speed based on the calibration controls provided by the manufacturer in the pregroove; it's usually (not always) right.