Windows NT Does Not Detect Media Change on ATAPI PD CD-ROM Drive

ID: Q226369

The information in this article applies to:

SYMPTOMS

Microsoft Windows NT does not detect a change in media when a FAT-formatted PD is removed from the drive. Even if another disk is inserted, both Windows NT Explorer and the DIR command will continue to display the list of files from the first FAT-formatted disk.

If the first PD disk present is formatted with the NTFS file system, Windows NT will correctly detect the change in media when the first disk is removed. Only FAT-formatted media display this problem.

After the FAT-formatted media has been inserted and replaced, the only way Windows NT can display the correct media contents is if the media is reformatted or the system is restarted.


CAUSE

This problem occurs because the Atapi.sys driver, which is responsible for this device, does not handle media change detection on this hardware correctly.


RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp
The English version of this fix should have the following file attributes or later:

   Date      Time     Size     File name   Platform
   -------------------------------------------------
   03/22/99  08:29p   62,480   Atapi.sys   Alpha
   03/22/99  08:30p   27,664   Atapi.sys   x86

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support


STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0.

Additional query words: 


Keywords          : kbbug4.00 kbfix4.00 
Version           : winnt:4.0
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: July 2, 1999