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files. (Don't format if Windows 9x or MS-DOS was installed
on the system partition, however).
4. Delete the Windows 9x boot files - Autoexec.bat, Config.sys,
Io.sys, Msdos.sys, and Command.com - from the root folder of
drive C. If you don't plan to reinstall any version of Windows
9x or MS-DOS, you can safely delete Bootsect.dos.

Removing Windows 2000
or Windows NT

If you have multiple installations of Windows 2000 or Windows
NT, you can delete any one of them using the same procedure as
detailed in the first three steps of the previous section. (The My
Documents folder and other data files that you might want to keep
reside under \Documents And Settings or \Winnt\Profiles; be sure
to check those locations before you begin nuking files and folders.)
If you want to remove all Windows 2000 and Windows NT
installations and revert to Windows 9x or MS-DOS only, the
process is actually quite simple:
1. If you want to keep any files that are on an NTFS volume,
move them to a FAT volume or other media (such as a Zip
disk). Once you carry out the next steps, you won't be able to
access your NTFS volumes.
2. Boot from an MS-DOS or a Windows 9x startup floppy disk.
3. Type sys c: to overwrite the Windows 2000 boot sector.
4. If the operating system you're removing is on a FAT volume
and you don't want to format the partition, you can remove the
\Winnt, \Program Files, and \Documents And Settings folders
after you move any data files you want to keep. In addition, you
can delete the Windows 2000 boot files - Ntldr, Ntdetect.com,
Boot.ini, Ntbootdd.sys, and Bootsect.dos - from the root folder
of drive C.
5. Use Fdisk to delete any NTFS-formatted partitions, and then
create new partitions in their place. Then format the partitions.

Using Third-Party Alternatives

The Windows 2000 boot manager does a serviceable job in most