Using the Autodetect CD-ROM option, Nero attempts to identify the specific properties of the CD/DVD-ROM drive by sending commands to the drive and checking the data returned by the drive. However, this process does entail some risks, as there are no definitive standards for the commands used to control CD/DVD-ROM drives. Sending unsupported commands to a CD/DVD-ROM drive can cause the computer to crash. For this reason, we recommend that you close all other programs and save important documents before starting the autodetection process.
Important: If you are running a demo version of Nero, you can download a CD image file from our website www.nero.com. You must then burn this image onto an empty CD using the Burn Image command from the File menu. (Please do NOT drag this file into an ISO compilation.) You can then use the CD you have burnt in the autodetection process.
When the CD/DVD-ROM drive has been successfully detected, the audio and data read speeds which have been measured will be displayed. These values may not correspond exactly to the values given by the manufacturer, as they are dependent, amongst other things, on the type of data (audio or data) and on your system environment. In particular, the audio read speeds are generally significantly slower than the data read speeds.
If the audio read speed is below 150 KB/sec. (this corresponds to 1X speed) or if the entire audio line is grayed out, you will unfortunately not be able to make fast copies of audio or mixed mode CDs, as all recorders expect to receive data at a speed of at least 1X, but your drive can only read audio data at a slower speed or not at all. The only solution to this problem is not to make fast copies of audio or mixed mode CDs.