Article ID: 247951 - View products that this article applies to.
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By default, the UDMA66 mode is disabled on a computer that is running Microsoft Windows when the computer uses a Intel chipset that supports UDMA66. This behavior is by design.
Enable the UDMA66 modeImportant This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
When you restart your computer, the UDMA66 mode will be enabled if the mode is supported by the hardware.
Article ID: 247951 - Last Review: August 18, 2005 - Revision: 5.2