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need to test in other environments. Or, after a fastidious evaluation
of different operating systems, you've decided on one, and you
want to jettison the other. No problem.
The easiest way to remove any operating system from a dual boot
system is to delete its entry from Boot.ini. Then boot into a
remaining operating system and delete the files related to the
operating system you want to remove. Or, for a more aggressive
approach, you can format the partition of the operating system you
removed from Boot.ini.

Removing Windows 9x or MS-DOS

Depending on how Windows 9x or MS-DOS was installed on your
computer, you might have an uninstall option, which is intended to
restore your computer's previous operating system, whatever that
was. Forget about it. The uninstall option is unlikely to work
properly, and it is likely to mess up your Windows 2000 configu-
ration. (If you ignore our advice and proceed with the uninstall
option, be sure to have an Emergency Repair Disk on hand!) If
you're trying to remove Windows 9x or MS-DOS and you want to
leave Windows 2000 in place, follow these steps:
1. Boot into Windows 2000.
2. Edit Boot.ini to delete the C:\="Microsoft Windows" entry in
the [operating systems] section. (The easiest way to open
Boot.ini for editing is with the Start / Run command: simply
type c:\boot.ini and click OK.)
3. Remove the files that are used only with the operating system
you're deleting. This would include everything in the
\Windows, \Program Files, and \DOS folders. Be sure that
you're deleting the folders from the Windows 9x partition - not
from the partition for an operating system you plan to keep.
And before you deep-six them, be sure to move any documents
or other files you want to keep. In particular, be sure that you
locate the My Documents folder (which is sometimes located
in a subfolder of \Windows\Profiles).
If you're certain that you don't need any files from the
Windows 9x partition (or if you've already moved them to
another drive), you can take the scorched earth approach and
format the partition instead of deleting individual folders and