## Physical Device Driver Reference

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### CDROMAUDIO_GETSUBCHANNELQ (63h) - Returns

02H Device not ready. The drive is not ready, or the controller does not respond.

07H Unknown media. The media is a compact disc that is not formatted according to CD Redbook specification.

10H Uncertain media.

13H Unsupported parameter. The first 4 bytes of the parameter buffer are not "CD01".