Uninstalling Windows NT 4.0

Updated: 01/24/2018 by Computer Hope

Windows NT only

If only Windows NT is on the computer, we recommend you fdisk the hard drive; delete and recreate the partitions and then format and reinstall Windows NT.

See the fdisk command page for further information about this command.
How to erase a hard drive and start over?

Windows NT with dual boot computer

Boot the computer with a bootable Windows 98 bootable diskette.

At the prompt a:\> type "sys c:" which should return system transferred. Once the system is transferred, reboot the computer back into Windows 98.

In Windows 98, locate and delete the files below, if present.

NTLDR
NTDETECT.COM
BOOT.INI
NTBOOTDD.SYS

Once the above 4 files are located and deleted, or are no longer present on the hard drive, delete the Windows NT folder or partition.

Finally, locate the file PAGEFILE.SYS and delete it.