Macintosh: Pioneer CD Requires Lower SCSI ID

I installed a Pioneer DRM-600 CD changer with driver v3.0 on my Macintosh. After installing the Pioneer driver the internal CD drive can no longer be seen by the system.
According to Pioneer you need the 3.0 version of the driver for System 7.5 compatibility and replaces the Apple CD-ROM driver.

Pioneer has also discovered that their DRM-600 drive needs to have a lower SCSI ID than the SCSI ID of the internal CD-ROM from Apple. Apparently, this contradicts the recommendations in their read me.

If your internal CD-ROM drive is set to SCSI ID 3 (the ID set by Apple at the factory), set the Pioneer DRM-600 drive to SCSI ID 1 or 2.

For additional information on this problem, contact Pioneer.
Published Date: Feb 19, 2012