The CD-ROM drive is not recognized by the operating system, or drive performance is erratic.

Some computers, such as IBM PS/ValuePoint models 6472, 6482, 6484, 6492, and 6494, have a compatible mode 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 performancemodes 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. If the CD-ROM drive still does not read the data CD, the CD-ROM drive might be defective.

The CD cannot be read.

Consider the following actions.

vThe CD might be dirty; clean it as described in “Caring for a CD” on page 1-8.

vThe CD might be defective; try another CD.

vThe CD is not ISO-9660 or High Sierra Group (HSG) compatible. Check with your place of purchase.

The CD does not play sound.

Consider the following actions.

vCheck that you are using an audio CD and not a data CD.

vAdjust the volume control on the drive. See “Front view of the drive” on page 1-3if headphones are connected to the front of the drive.

B-448X-20X Internal IDE CD-ROM Drive: User’s Guide

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IBM 71P7279 manual The CD cannot be read, The CD does not play sound, B-4 48X-20X Internal IDE CD-ROM Drive User’s Guide