If these lines are not present, add them.
4. Save any changes and exit the CONFIG.SYS file.
5. Check that the device drivers are on the hard disk drive and in the correct directory.
If the drivers are not present, reinstall them. See the READ.ME file on the IBM 32X-12X Internal IDE CD-ROM
Drive Option Diskette for more information.
The CD-ROM is not recognized by the operating system or the drive performs erratically.
Some computers, such as IBM PS/ValuePoint models 6472, 6482, 6484, 6492, and 6494, have a compatible
and a high performance mode for mass storage devices. Normally, the CD-ROM drive functions better under
high performance mode.
However, if your drive is not functioning properly in that mode, you might need to use compatible mode.
Check the configuration-setup information for your computer.
1. Access your configuration utility program.
2. Select Devices.
3. Scroll down to the Mass Storage Devices section.
4. Mass Storage Devices contains the entries Primary IDE Mode and Secondary IDE Mode. These
entries are used to set the performance mode of each IDE port. Set the mode to Compatible for the port on
which you installed your CD-ROM drive.
Other IBM and non-IBM computers might have similar settings. Check to see if your BIOS or configuration-
setup utility provides for compatible and high performance modes for IDE performance. For these
computers, use the compatible mode for slower IDE devices, such as this CD-ROM drive. Refer to the
documentation that comes with your computer for additional details on selecting IDE performance modes.
Many older computers will not have a selection of IDE performance modes.
The computer does not recognize the CD-ROM drive after the device drivers are loaded.
Check for incompatibilities among the CD-ROM device driver and other device drivers or other hardware in
your computer. Create a System Diskette with minimum CONFIG.SYS and AUTOEXEC.BAT system files.
1. Before creating special CONFIG.SYS and AUTOEXEC.BAT files, make a backup copy of these files in a
convenient directory, (if you have not already done so).
At the DOS prompt:
Type copy CONFIG.SYS CONFIG.IBM and press Enter.
Type copy AUTOEXEC.BAT AUTOEXEC.IBM and press Enter.
2. Create a System Diskette and copy the device drivers onto it. For DOS and Microsoft Windows 3.X:
a. Insert a blank diskette into drive A.
b. At the DOS prompt, type format a: /s and press Enter. The /s parameter creates the System Diskette.
Follow the instructions on the screen.
c. When the format process completes, copy the C:\IBMIDECD.SYS and C:\MSCDEX files from the hard disk
to the System Diskette.
