PC Compatibility Card: PC CD-ROM Discs Aren't Recognized

TECHINFO-0020222

TOPIC

I installed a PC Compatibility card into a Power Macintosh 5400/120 computer. However, when I attempt to use a CD-ROM disc in the PC environment, the CD-ROM drive is not recognized. How can I resolve this?

DISCUSSION

If you are running Macintosh System Software 7.5.3 or newer you must have Apple CD-ROM software version 5.1.7 (or newer) and PC Compatibility software version 1.5 installed before following the procedure described in this article.

It is likely that you do not have the driver for the Apple CD-ROM drive installed in the PC environment. This driver is not installed during the default installation of the PC Compatibility Card software.

To verify that the driver is not installed, first switch to the PC environment. At the DOS prompt, type EDIT CONFIG.SYS. The CONFIG.SYS editor appears on the screen showing the loading order for items on the DOS side. If the CD-ROM driver is installed, the last line of the CONFIG.SYS should read "DEVICEHIGH=C:\APPLE\CDROM.SYS/D:CDDRVR".

If this line does not appear, you need to install the CD-ROM driver, and you should also install QuickTime if you plan on using multimedia CD-ROM discs. Instructions for installing this software are included on page 74 of the PC Compatibility Card User's Manual (For 7-inch card).

Additionally, for the CD-ROM software to function, the AUTOEXEC.BAT file must have the line: LOADHIGH C:\DOS\MSCDEX.EXE /S /D:CDDRVR /L:E

MSCDEX.EXE is documented in the MS-DOS online help feature and not either of the user's manuals.

Type "Help MSCDEX" at the DOS prompt for more information.

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