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Why does my new Ultra ATA/100 drive seem to run slower under Windows 2000 than it did with Windows 98?

April 26, 2017ATA drive run slower Ultra Windows

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Why does my new Ultra ATA/100 drive seem to run slower under Windows 2000 than it did with Windows 98?

1 Answer

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10 Posted

Microsoft has posted a technical article stating Windows 2000 does not support UATA-100 (Mode 5) for IDE hard drives. According to this article, all UATA-100 IDE hard drives that are used with Windows 2000 will default to UATA-66 (Mode 4). The supported fix is to install Service Pack 3. See Microsoft’s article Q260233 for details.