Five ways to eject a stuck CD or DVD from the optical drive
Ejecting the stuck disc can usually be done in one of the following ways:
1. Restart the computer and after the chime press and hold down the
left mouse button until the disc ejects.
2. Press the Eject button on your keyboard.
3. Click on the Eject button in the menubar.
4. Press COMMAND-E.
5. If none of the above work try this: Open the Terminal application in
your Utilities folder. At the prompt enter or paste the following:
If this fails then try this:
Boot the computer into Single-user Mode. At the prompt enter the same command as used above. To restart the computer enter "reboot" at the prompt without quotes.
What COMMAND-D menu? For a Snow Leopard system the boot manager menu is opened by holding down the OPTION key during startup. However, I don't recall you can eject a disk from that menu. The 'D' key by itself initiates the AHT on some models.
You can boot into Single-user Mode and use Unix commands if you know which they are. For example, you can eject a CD/DVD with the command "diskutil eject /dev/disk1".