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Err Msg: Setup Cannot Run In a 386 Enhanced Mode Windows...

Article ID: 146465

Article Last Modified on 11/17/2003

Microsoft Windows NT Workstation 3.51
Microsoft Windows NT Server 3.51
Microsoft Windows 95

This article was previously published under Q146465

SYMPTOMS

When you attempt to install Windows NT 3.51 on a Windows 95 computer with the "WINNT /B/W" (without quotes) command, the following error message appears:

Setup cannot run in a 386 Enhanced Mode Windows MS-DOS Command Prompt.
Exit Windows and run Setup again.
Setup cannot continue. Press ENTER to exit.

CAUSE

This problem occurs if there is no space between the /B and /W switches for WINNT.EXE.

RESOLUTION

To correct this problem, type the following at the command line: WINNT /B /W

MORE INFORMATION

The /W switch allows WINNT.EXE to run in Windows 95. You can use this switch with other WINNT.EXE switches. For example, if you want to create boot floppy disks for CD-ROM or floppy-based Windows NT installation, you can type the following at the command line: WINNT /OX /W "WINNT /W" allows you to install Windows NT from within Windows, bypassing the drive locking and enhanced driver issues involved with a Microsoft Windows install. Again, this bypasses many of the Windows NT install safety features and is not recommended.

When you type WINNT /? at the command line, the /W switch is not listed. For more information on the /W switch, please see SETUP.TXT on the Windows NT Server or Workstation 3.51 compact disc.

For more information, regarding the /w switch and Windows NT 4.0 please refer to the following article in the Microsoft Knowledge Base:

147012 Activating /W Switch to Prevent Rebooting in WinNT

Additional query words: prodnt win95

Keywords: KB146465