STOP 7B When Not Updating File Systems for Windows NT 3.1

Last reviewed: January 12, 1995
Article ID: Q122441

The information in this article applies to:

Microsoft Windows NT operating system version 3.1
Microsoft Windows NT Advanced Server version 3.1
Microsoft Windows NT Workstation version 3.5
Microsoft Windows NT Server version 3.5

SYMPTOMS

After you install Windows NT version 3.5 to another directory instead of upgrading Windows NT version 3.1 and both versions of Windows NT reside on an NTFS or FAT partition, the following STOP message may appear when you start Windows NT version 3.1:

   STOP: 0x0000007B
   Inaccessible Boot Device

During bootup when checking the file system(s), the error message for NTFS is:

   This drive cannot be checked with this version of UNTFS.DLL.

File Manager gives a description of the drive as:

   Wrong disk is in the drive.

Disk Administrator says the format of the drive is:

   Unknown.

CAUSE

This problem occurs due to changes made to the file systems in Windows NT version 3.5.

RESOLUTION

To correct this problem:

Start Windows NT version 3.5.
Rename the following files in the <winnt31root>\SYSTEM32 directory to another file name on the hard disk drive:
```
      UFAT.DLL
      UNTFS.DLL
```
Rename the following files in the <winnt31root>\SYSTEM32\DRIVERS subdirectory to another file name on the hard disk drive:
```
      NTFS.SYS
      FASTFAT.SYS
```
Copy the same files listed above (Step 2) from the Windows NT version 3.5 CD (for either Server or Workstation) to the same subdirectory of <winnt31root>\SYSTEM32\DRIVERS.
NOTE: These replacement files are in expanded format and are located in the FS31UPD\I386 subdirectory (for Intel-based computers) on the Windows NT version 3.5 CD.
Shut down and restart the computer with Windows NT version 3.1.
Run UPDATE.EXE located in the FS31UPD\I386 subdirectory (for Intel- based computers) on the Windows NT version 3.5 CD (for either Server or Workstation).

Additional reference words: prodnt 3.10 3.50 hard disk trap 0x7B
KBCategory: kbusage
KBSubcategory: ntfilesys ntboot ntstop

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: January 12, 1995
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.