Microsoft Windows NT, Beta October 1992

Problem Running DOS/Windows Applications on Systems with Cirrus based 
Video Adapters

The Microsoft Windows NT product group has recently identified an 
application interoperability problem with the October Beta release 
of Windows NT.  On systems where a Cirrus based video adapter is 
installed, an NTVDM error may occur preventing execution of MS-DOS 
and Windows applications.  NTVDM errors can occur due to other 
factors as well, however this fix is intended for those experiencing 
this problem with Cirrus chip sets. We have verified a fix to 
NTDETECT.COM and are making this available to our customers 
experiencing the problem today.  

Please follow the below instructions carefully to remedy this problem.  
If you continue to encounter similar problems, please let us know.  
Thank you for your continued beta testing efforts. 
______________________________________________________________________


1.  Connect to the WINNT CompuServe forum, Library 2 where you will find 
    WNT005.ZIP.  This file was created using the PKZIP file compression
    utility.  You will need the PKUNZIP utility to extract the files to 
    a directory on your hard drive.  PKUNZIP can be found as PKZ110.EXE  
    in Library 2 of the IBMCOM forum.  Download PKZ110.EXE and execute 
    the file to extract the PKUNZIP.EXE utility.  To extract the WNT005.ZIP 
    file, type: PKUNZIP WNT005.ZIP C:\WNT005 for example.  The following 
    file can now be seen:  

        NTDETECT.COM
        README.TXT

2.  Close all applications running on the desktop. 

3.  Execute the MS-DOS Command Prompt in the Main Program Group. 

4.  Change directory to the root of your hard drive where you will locate 
    NTDETECT.COM*.

5.  Rename NTDETECT.COM* to NTDETECT.OLD*.  

6.  Copy the updated NTDETECT.COM file from the patch floppy to the root 
    location on your hard drive.  

7.  Exit the command window.  

8.  Shutdown Windows NT by pressing CTRL-ALT-DEL, Shutdown, OK. 

Further execution of applications on the system will proceed normally.