DOCUMENT:Q107368  29-NOV-1993  [W_NT]
TITLE   :Editing the OS/2 CONFIG.SYS File
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT operating system version 3.1
 - Microsoft Windows NT Advanced Server version 3.1
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SUMMARY
=======

Some OS/2 applications may require that changes be made in the OS/2
CONFIG.SYS file. However, the original OS/2 CONFIG.SYS file may not exist
on the system. Information for a fake OS/2 CONFIG.SYS file is kept in the
registry, and you can make needed changes by editing the fake CONFIG.SYS
file. After you make these changes, the new values will be written back to
the appropriate entries in the Windows NT Registry.

MORE INFORMATION
================

WARNING: Using the Registry Editor incorrectly can cause serious, system-
   wide problems that may require you to reinstall Windows NT to correct
   them. Microsoft cannot guarantee that any problems resulting from the
   use of the Registry Editor can be solved. Use this tool at your own
   risk.

The Microsoft Windows NT "System Guide" states on page 322 that you must
use an OS/2 text editor to change the OS/2 CONFIG.SYS file. An OS/2 editor
can access a "dummy" copy of this file located at C:\CONFIG.SYS. However,
if you access the OS/2 CONFIG.SYS entry in the Registry directly using the
REGEDIT utility, then you will be able to invoke the online Multi-String
editor to make needed changes. You can do this by selecting the value entry
next to the entry for "CONFIG.SYS: REG_MULTI_SZ."

The following subkey entry in the Registry identifies the location of the
OS/2 CONFIG.SYS information:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft

     \OS/2 Subsystem for NT\1.0\config.sys

Microsoft recommends that you use a third-party text editor to edit the
OS/2 CONFIG.SYS, but if you do not have such an editor availabe, you can
use the online Multi-String editor in the Windows NT Registry.

For more information about OS/2 subsystem configuration files, query on the
following words in the Microsoft Knowledge Base:

   environment and variables or OS/2 CONFIG.SYS

Additional reference words: 3.10 os2libpath libpath 3rdparty
KBCategory:
KBSubCategory: os2ap

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Copyright Microsoft Corporation 1993.