DOCUMENT:Q157678  18-FEB-2002  [winnt]
TITLE   :DEC TLZ07 DAT Drive Not Recognized After Service Pack 5
PRODUCT :Microsoft Windows NT
PROD/VER::3.51
OPER/SYS:
KEYWORDS:kbhw kbsetup kbHardware

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The information in this article applies to:

 - Microsoft Windows NT Server version 3.51 
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SYMPTOMS
========

After installing Service Pack 5 on your Alpha NT 3.51 server, you may not be
able to access DEC TLZ07 4MM DAT Tape Drive and may receive the following errors
in the event log:

   Event ID: 7026

   Source: Service Control Manager
   Description: The following boot-start or system-start driver(s) failed to
   load: 4mmdat.sys

   Event ID: 7000

   Source: Service Control Manager
   Description: The 4mmdat service failed to start due to the following error:
   the system cannot find the device specified

CAUSE
=====

The 4mmdat.sys driver that is replaced by Service Pack 5 is incompatible with
these drives.


RESOLUTION
==========

Connect to DEC's World Wide Web site at:

   http://www.compaq.com/support/

Download the DECTAPE file containing all of the drivers. The original file on the
computer will be 4mmdat.sys, dated 05-26-95 36,752K. The file to replace it with
in the %SystemRoot%\System32\Drivers subdirectory will be the one you just
downloaded named 4mmdat.sys dated 11-02-94 50,624K.

The third-party contact information included in this article is provided to help
you find the technical support you need. This contact information is subject to
change without notice. Microsoft in no way guarantees the accuracy of this
third-party contact information.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 3.51. We are
researching this problem and will post new information here in the Microsoft
Knowledge Base as it becomes available.

Additional query words: prodnt

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Keywords          : kbhw kbsetup kbHardware 
Technology        : kbWinNTsearch kbWinNT351search kbWinNTSsearch kbWinNTS351 kbWinNTS351search
Version           : :3.51

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