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you can also use this procedure to replace a lost or corrupted
Bootsect.dos file. Before you begin the steps just outlined, boot
from an MS-DOS floppy disk and type sys c: to overwrite the
Windows 2000 boot sector with the MS-DOS/Windows 9x boot
sector. Then follow the steps we described to reverse the damage
you've just inflicted, creating a new Bootsect.dos in the process.)
Regardless of the order in which you install the operating systems,
you'll need to boot into each operating system and then install all
the applications you want to use with that system. Unless you
never plan to uninstall a particular application, don't point the
separate installations to the same folder. Even though it wastes
disk space with duplicate files, you're much better off installing
each copy separately. For the simplest setup, install each
application to a subfolder of the \Program Files folder on the same
partition as the operating system from which you're installing.

Sharing a Paging File

One way you can save disk space in a dual boot system is to use
the same virtual memory paging file (sometimes called a swap file)
for each operating system. Because each operating system uses its
paging file only when it's running (and the file doesn't need to be
saved between sessions), you can direct Windows 9x to use the
Windows 2000 paging file (as long as the file is on a FAT
partition). To do that, follow these steps:
1. Open the System.ini file in the Windows 9x folder (normally
C:\Windows).
2. In the [386Enh] section, add a new line (changing the d
shown here to the letter of the drive where your Windows
2000 paging file resides):
pagingfi1e=d:\pagefile.sys
Now you can delete the \ Windows\ Win386.swp file. (You can't
do this from Windows 9x.) The next time you start Windows 9x,
it'll use the Windows 2000 paging file.

Dual Booting with Windows NT

Windows 2000 and Windows NT 4 coexist nicely, and you can