Poor Performance Reading VideoCD With IDE CD-ROM Drive

Poor Performance Reading VideoCD With IDE CD-ROM Drive

Problem:

Data transfer can occur very slowly when you are using an IDE CD-ROM drive to playback VideoCD in Windows 95 if the following conditions are true:

The IDE CD-ROM drive is configured as SLAVE on an IDE channel with another device (such as harddisk) configured as MASTER on the chain.
You are using a PROTECTED-MODE driver in Windows 95 to access IDE drives, including the IDE CD-ROM drive.

For example, when playing a VideoCD your computer seems to stop responding due to the slow data transfer rate.

Cause:

There is a problem in the current version of IOS.VXD that causes excessive seeking on data requests from the CD-ROM drive. This results in the degradation in the data transfer rate from the CD-ROM drive.

Solution:

Microsoft has released an updated version of the IOS.VXD file that corrects the problem. You will be able to obtain the file from their web site www.microsoft.com.