A reader emailed me a question; he wanted to know how to identify what sort of recordable media (CD-R, CD-RW, DVD-R, etc.) was in his machine’s optical drive. Obviously, you could hit the eject button to answer the question, but I wondered if the system would be able to help. After a bit of testing, I found three ways to find this info, though I suspect there may be more.

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Identify inserted recordable media type