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

The information in this article applies to:

• Microsoft Windows NT Workstation version 3.51
• Microsoft Windows NT Server version 3.51
• Microsoft Windows 95

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

When you type "WINNT /?" (without quotes) 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:

   ARTICLE-ID: Q147012
   TITLED    : Activating /W Switch to Prevent Rebooting in WinNT