More of a comment then an answer, but are you sure you have 2 discs in the drive? It is almost physically impossible to shove 2 discs into one of these optical drives! the thickness of the drive, and the internal mechanics of the drive allow the thickness on one disc, it will not accept another one.
if you did manage to hammer a second disc into a drive, you will most likely need to replace the drive because you have completely destroyed it in the process.