Easy Mac disk eject methods

1) Press and hold the Eject key on your keyboard, it looks like the above icon in this post
2) Right-click (control-click) on the disks icon on the Desktop and select “Eject” from the contextual menu
3) Drag the disks icon to the Trash bin within the Dock
4) Select the disk icon and hit “Command-E”

More advanced Mac stuck disk eject methods

1) Launch Disk Utility and select the CD/DVD from the sidebar. Click the Eject icon at the top of the Disk Utility screen, it should pop right out.
2) Launch the Terminal and type following command: drutil eject
3) If all else fails, try Restarting your Mac and hold down the mouse button (or trackpad button if you have a laptop) as the system boots. Hold it down until the system boots, again the disk should come out.

In the rare event that I have a stuck disk in my Mac I opt for the Terminal command mentioned above, it hasn’t failed me yet.