If you insert a disc (CD or DVD) in Mac OS X 10.4, then try to make a copy of it using the Finder File menu's Duplicate command, an "error -8058" alert may appear, and the disc might not eject.
Try the Eject key to eject the disc. If that doesn't work, restart the computer, then hold down the mouse button until the disc ejects.
Use Disk Utility to duplicate a disc, instead of the Finder.
This document will be updated as more information becomes available.