A great article for the Mac on determining your drive type is on MacWorld and PC World

Original article is by Kris Fong, Macworld.com   Macworld Buying Guide: Optical drives

small quote on this “..To see which formats are supported by the optical drive in your Mac, click on the Apple menu and select About This Mac. Click More Info, which opens System Profiler, and in the left Contents column under Hardware, select Disc Burning. The right pane displays all formats your Mac can read and write. Pay attention to the “write” formats, noting the “+” and/or “-” stats, and purchase discs that bear this info.”

Macs have been tricky with the orginal superdrive which was DVD-R only.

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