FIX: Incorrect Error Message While Writing to Write-Protected IDE Disk

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Article ID: 331895 - View products that this article applies to.
This article was previously published under Q331895
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While copying a file to a write-protected IDE removable disk, you receive one of the following error messages:
Semaphore Timeout
- or -
Cannot copy <Filename>: The request could not be performed because of an I/O device error


The Atapi.sys driver incorrectly processes the status received from the device. This causes the Atapi driver to return incorrect status information.


To resolve this problem, use the updated version of the Atapi.sys driver. By using this update, the correct error message is displayed, as shown in the following:
The disk is write-protected
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. The global version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows XP

   Date         Time   Version        Size    File name   Platform
   25-Oct-2002  00:40  5.1.2600.104   87,296  Atapi.sys   x86
   25-Oct-2002  00:40  5.1.2600.104  306,432  Atapi.sys   IA64

Windows XP Service Pack 1 (SP1)

   Date         Time   Version         Size    File name   Platform
   24-Oct-2002  23:59  5.1.2600.1135   87,040  Atapi.sys   x86
   24-Oct-2002  23:59  5.1.2600.1135  305,792  Atapi.sys   IA64


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.


Article ID: 331895 - Last Review: October 12, 2005 - Revision: 1.7
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition SP1
  • Microsoft Windows XP Home Edition
kbautohotfix kbhotfixserver kbqfe kbddk kbwinxpsp2fix kbwinxppresp2fix kbfix kbbug KB331895

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