Quick overview:
Since the birth of Windows 2000, it has been accompanied by a very special teething problem: It does not support hard disks that work with UltraDMA/66 mode (or higher) and assigns them the much slower UltraDMA/33 mode.
With DMA/66, a hard disk can theoretically push up to 66 megabytes per second through the lines. There are now devices with up to 133 MB, which promises maximum performance. If you still have Windows 2000 without Service Pack 1 (i.e. a purchased version without updates), you are also affected by this error and can work around it as follows:
1. Click on Start/Execute and enter in the command line regedit in.
2. Make your way through the keys HKEY_LOCAL_MACHINE\SYSTEM\C urrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0000 and right-click in the right-hand pane.
3. From the context menu that appears, select New/DWORD Value. You give this self-created value the name EnableUDMA66.
After a restart, the hard disk will run much faster, the accesses will be shorter and the general performance will increase.
NOTE FOR NEW PUBLICATION: This article was produced by Sandro Villinger and comes from the Windows Tweaks archive, which has been built up since the late 1990s.
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