On tray loading CD-ROM drives like the AppleCD 300 Plus and the AppleCD 600, the tray can only be opened with the button when:
- There is nothing in the drive.
- The CD-ROM software has not loaded.
At all other times, you must request that the system software eject the CD. This can be done by dragging the CD to the Trash, or by clicking on the CD icon, and then choosing "Put Away" from the File menu.
To eject a CD from a computer at start up, press and hold the eject button until the CD is ejected.