Q236940: Problems with ATAPI Multiple-LUN Devices

Article: Q236940
Product(s): Microsoft Windows NT
Version(s): winnt:4.0 SP4
Operating System(s): 
Keyword(s): kbWinNT4sp6fix
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0, Terminal Server Edition 
- Microsoft Windows NT Server version 4.0 SP4 
- Microsoft Windows NT Workstation version 4.0 SP4 
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SYMPTOMS
========

After you apply Windows NT 4.0 Service Pack 4, Atapi.sys recognizes ATAPI
multiple-LUN devices correctly (such as a CD-ROM/PD combination drive). However,
you may encounter the following problems with the device:

- With a write-protected PD media, you may receive the following error message:

  The system was attempting to transfer file data from buffers to
  \Device\Harddisk(<x>)\Partition(<y>).
  The write operation failed, and only some of the data may have been written to
  the files.

- If you replace one PD media with another and then press F5 to refresh the
  view in Windows NT Explorer, the media change is not detected and you
  continue to see the contents of the first media.

CAUSE
=====

The Windows NT 4.0 Service Pack 4 version of the Atapi.sys file does not
correctly handle the Logical Unit Number (LUN).

RESOLUTION
==========

Windows NT Server or Workstation 4.0
------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the
individual software update. For information on obtaining the latest service
pack, please go to:

- http://www.microsoft.com/Windows/ServicePacks/

-or-

- Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, contact Microsoft
Product Support Services. 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://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS


Windows NT Server 4.0, Terminal Server Edition
----------------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT Server
4.0, Terminal Server Edition. For additional information, click the following
article number to view the article in the Microsoft Knowledge Base:

  Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition.

This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and
Windows NT Server 4.0, Terminal Server Edition Service Pack 6.


Additional query words:

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Keywords          : kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400search kbWinNT400search kbWinNTW400sp4 kbWinNTSsearch kbWinNTS400sp4 kbWinNTS400search kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0 SP4
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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