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Why does my (old) CD-ROM drive work properly for data but not for audio CDs?

April 26, 2017audio CD-ROM cds Data drive properly

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Why does my (old) CD-ROM drive work properly for data but not for audio CDs?

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Very early CD-ROM drives (such as the NEC CDR-1750) were not SCSI-2 compliant and use vendor-unique commands for audio playback. The only UNIX-based CD player that supports the Hitachi is xmcd, written by yours truly. The source code to xmcd-1.1 is available via anonymous FTP from ftp.x.org. Also available for xmcd is a 1600+ CD database. Xmcd requires Motif to compile. Special Note for SunOS 4.1.x/Solaris 1.x (sparc): Although xmcd-1.1 supports SunOS 4.1.x, you will run into problems playing audio using the Hitachi CDR-1750S. This is because SunOS 4.1.x has a bug in its SCSI CD-ROM driver that makes it malfunction when delivering 12-byte SCSI commands, which the Hitachi require for audio playback.