Installing MS-DOS Version 6.2x After Windows NT is Installed

• Microsoft Windows NT operating system version 3.1
• Microsoft Windows NT Advanced Server version 3.1
• Microsoft Windows NT Workstation versions 3.5, 3.51, 4.00
• Microsoft Windows NT Server versions 3.5, 3.51, 4.00

SUMMARY

If you install MS-DOS version 6.2x on a computer that has Windows NT installed, the Windows NT boot sector may be erased. This prevents Windows NT from loading.

Windows NT and MS-DOS 6.2x can be on the same computer. However, if MS-DOS 6.2x is installed after Windows NT, then you may need to use the following procedure to restore the Windows NT Flex Boot Loader.

MORE INFORMATION

To repair the Windows NT boot sector:

Windows NT 3.5, 3.51, and 4.00

1. Start your computer using the Setup Boot Disk. Insert Setup Disk 2 when prompted.



2. For Setup options, press R for Repair.



3. Four selections appear and all four are selected by default. You can press ENTER to select or clear the options. Clear the selections of all options except Inspect Boot Sector; this should be the only option that has an X in front of it.



4. Select Continue and press ENTER.



5. If you want Setup to detect mass storage devices in you computer again, press ENTER. If you want to skip the mass storage device detection, press S.



6. Press ENTER after performing/skipping the mass storage device detection. Insert Setup Disk 3 when prompted.



7. If you have the Emergency Repair Disk, press ENTER, insert the disk, and press ENTER again. If you do not have the Emergency Repair Disk, press ESC to allow Setup to locate Windows NT 3.5 or 3.51 and the Repair information.



8. At the DOS prompt, edit the Boot.ini with the following statement: C:\="<desired text>"
   
   <desired text> is what you would like to be displayed on the selection menu.
   
   Note: The boot.ini file is a hidden.



9. Remove the disk from Drive A and press ENTER to restart your computer.

Windows NT 3.1

1. Start your system using Disk 1 - Setup Disk for Floppy Disk Installation. (Or Disk 1 - Setup Disk for CD-ROM Installation if Windows NT was set up using a CD-ROM.)



2. When prompted for Setup options, press R for Repair.



3. When prompted to do so, insert the Emergency Repair Disk that was originally created for this computer.



4. Reinsert Disk 1 when prompted. (This is the same disk with which you started your system.)



5. You will see three selections. All three will be selected by default. Using the SPACEBAR to select/clear the options, clear the selection of all options except Verify Boot Files On Your C: Drive. This should be the only option that has an X in front of it.



6. Select Continue and press the ENTER key.



7. The software will run CHKDSK and verify startup files and the Windows NT boot sector will be rebuilt. You will be prompted to restart your computer when the procedure is complete.

Article-ID: Q153762
TITLE: Setting Up Dual Boot After Installing Windows NT

Additional query words: prodnt 3.1 3.5 msdos

Keywords          : kbinterop ntboot ntdosap 
Version           : 3.1 3.5 3.51 4.0
Platform          : NT 
Issue type        : 

Last Reviewed: January 15, 1999