Optical drives typically include a small pinhole large enough to insert a paper clip end to manually eject a stubborn disc. Since the Mac Mini doesn't include this feature, you must use other methods ...
First, restart your Windows PC and see if it helps. I have found that a simple restart solves many problems, including this one. You may also try clicking on the Eject button while the computer is ...
I'm working on this old iMac (350Mhz) which booted up the "Folder ?" deal. So I pop in the Norton CD to boot it up. Norton wants to format the drive. What the? Instead, I get it to check the drive ...