The Apple PowerBook G3 DVD-ROM 1.0 [487k] is a fix for the DVD for Lombard owners:
The PowerBook G3 DVD-ROM Update application updates the DVD-ROM drive to eliminate a possible interruption during system startup if a CD/DVD disc is not in the drive and the drive tray is closed.The PowerBook G3 DVD-ROM Update is meant for use on any PowerBook G3 Series (Bronze Keyboard) model with a DVD-ROMdrive.