Article ID: 132882 - View products that this article applies to.
This article was previously published under Q132882
When you are copying a large directory structure from a CD-ROM drive to a local hard disk, your computer may stop responding (hang). You must perform a local reboot to end the copy task and regain control of your computer.
The Windows CD-ROM file system with protected-mode drivers includes a "Read-Ahead" feature that is designed to provide smoother video playback, with faster and more efficient data streaming. The Read-Ahead feature can cause the CD-ROM drive controller to be driven faster than it was designed to be.
To prevent this problem, follow these steps:
The following table describes the Optimize Access Pattern For settings:
Setting Behavior ------------------------------------------- No Read Ahead Read ahead 0 bytes Single-speed drives Read ahead 50K bytes Double-speed drives Read ahead 100K bytes Triple-speed drives Read ahead 150K bytes Quad-speed drives Read ahead 200K bytes
If you are not sure of your CD-ROM drive's transfer rate, please consult the drive's documentation or manufacturer.
Article ID: 132882 - Last Review: January 19, 2007 - Revision: 1.3
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