Have an Apple USB SuperDrive, brand new about 1.5 years ago. Just used for the first time. Had to install on an old 2009 MBP for backup and original Snow Leopard disc I had for that laptop. Apparently it would not read the OS and some other no name drive had to be used. (read music, movie dvds,) Should that be considered peculiar to these drives, or not? T.I.A.