There are no physical buttons. Got a refurbished hard drive from Micro Center. But it shows all those silly icons--representing no Mac OS. But my old hard drive is dead so I can't boot up to get the Tiger DVD is there. I already tried holding the mouse button on boot-up to open the dvd drive--no luck. How can I get the DVD/CD drive to open? It's such a stupid design not not to have a physical eject button. Thanks! Happy Thanksgiving!