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Microsoft KB Archive/102054

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Knowledge Base

How to Prevent Windows NT from Appending the MS-DOS Path

Article ID: 102054

Article Last Modified on 11/1/2006


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

This article was previously published under Q102054


On a system using NT Flexboot to boot both MS-DOS and Windows NT, Windows NT appends the path setting found in the AUTOEXEC.BAT file to the default command environment. This is done so that you can run MS-DOS-based applications that are currently installed on your system without modifying Windows NT.

If the you do not want the MS-DOS path appended to the default Windows NT environment, do the following:

  1. Create a batch file (for example, DOSPATH.BAT) with the PATH statement from your AUTOEXEC.BAT file.
  2. Remove the PATH statement from AUTOEXEC.BAT.
  3. Use the CALL command to call the other batch file. For example:

    call c:\dospath.bat

When you boot Windows NT, it does not find a PATH statement in your AUTOEXEC.BAT file. However, when you boot MS-DOS, the AUTOEXEC.BAT file runs DOSPATH.BAT and sets your path.

Additional query words: prodnt

Keywords: kbenv KB102054