Microsoft KB Archive/326643

= NTFS May Not Detect When a CD or a DVD Is Removed =

Article ID: 326643

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT 4.0 Service Pack 6a
 * Microsoft Windows NT 4.0 Service Pack 6a

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This article was previously published under Q326643



SYMPTOMS
After you remove a CD or a DVD from your computer, the NTFS file system may not detect that the disk was removed even if you insert a different CD or DVD into your drive.



CAUSE
This problem may occur if the NTFS does not release the VCB (Volume Control Block) of the CD or the DVD that you removed.

Note A VCB is a file-system structure that is internal to the operating system. In this structure, the NTFS maintains state information about a mounted volume.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix 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.   Date         Time   Version        Size     File name -  24-Jul-2002  19:27  4.0.1381.7181  368,656  Ntfs.sys Note Because of file dependencies, you must have Microsoft Windows NT 4.0 Service Pack 6a (SP6a) installed to install this hotfix.



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0.

Keywords: kbbug kbfix kbqfe kbhotfixserver KB326643

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