ATAPI driver takes a long time to resume from standby

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Article ID: 816764 - View products that this article applies to.
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Computers that have removable disk device controllers, such as CardBus or Memory Stick, may take a long time to resume from standby if there is a disk in the controller.


To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to obtain the latest Windows XP service pack


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.


Windows needs immediate access to paging file contents when it comes out of standby. The Atapi.sys driver must wait for devices that hold paging files to be available when Windows needs them. This causes the Atapi.sys driver to take long time when resuming.

When Windows is resuming, the driver does not have to wait for the disk devices that do not contain paging files. This reduces the time that it takes to resume from standby.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.


Article ID: 816764 - Last Review: February 27, 2014 - Revision: 2.2
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Home Edition SP1
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