Microsoft KB Archive/107368

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Knowledge Base


Editing the OS/2 CONFIG.SYS File

Article ID: 107368

Article Last Modified on 11/1/2006



APPLIES TO

  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1
  • Microsoft Windows NT Advanced Server 3.1



This article was previously published under Q107368

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 query words: prodnt os2libpath libpath 3rdparty

Keywords: kb3rdparty KB107368