02H

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

Unknown media. The media is a compact disc that is not formatted according to the CD Redbook specifications.

Sector not found. The requested sector is not on the disc. This error is returned if a data address cannot be found or if the minutes/seconds/frame address cannot be found.

Uncertain media.

Unsupported parameter. The first 4 bytes of the parameter buffer are not "CD01" or the addressing mode is out of range.

Device already in use.