I put a small Dynex disk into my disk drive. Anything I can do to get it out or do I just need to take it in?

Thanks

There is generally a very small hole in the CD-Rom drawer. Pushing a straight paper clip in this hole will release the latch. Do it with the computer off.

There is a reference here for mini-CD adapters, but a quich search wasn't helpful.
Mini CD - Wikipedia, the free encyclopedia