Please excuse my poor english language, I'm french and I don't use to write in english.
I have the quite same problem than "Rayray519": I have got a Mac Mini, year 2010.
the superdrive is able to read some disks, but isn't able to burn some "-r" or "-rw" dvd or cd when I want to creat some disks.
Now I am unning under Lion, but when Snow Leopard was on, the problem already existed. The burning job always begin, but after a few seconds, it stop with an error.
My firmware revision is KC08
Thanks a lot for responding at my questions: how can I do for upgrading the firmware (is it interesting to do it)? or do you thing about an hard problem on superdrive?
Most likely suspect is the Optical Drive has gone bad, but to "mostly" eliminate a software problem, boot you Mini in to Target mode...
If it still cannot be inserted, likely the drive is bad.
This seems to be a frequent issue per posts here and elsewhere. I took my Mini apart per iFixIt instructions and found that of the three arms inside the drive that are supposed to respond to the disc being inserted, one appears to be seized. Now, I have no manual to rely on for whether the arm should be moving freely or not, so this is just a hunch. Still, a lot of people seem to be having problems with these drives...