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Chapter 1.  Installing and Booting Windo... > Clone your original OS for a dual-bo...

1.6. Clone your original OS for a dual-boot system

A nice option that lets you retain your existing OS and applications while still upgrading to Windows 2000 is to clone your existing OS to a new folder or partition and upgrade the copy. Your original installation remains as-is, and you end up with a Windows 2000 installation that incorporates all your application and customized OS settings. You can upgrade Windows 9x or Windows NT Workstation to Windows 2000 Professional, or upgrade Windows NT Server to Windows 2000 Server.

Both of the next two procedures require that you replace several instances of a given string in the registry. For example, you need to change all instances of C:\Windows in the Windows 9x registry to C:\Win9x, and in the Windows NT registry, from C:\Winnt to C:\Win2k. Although you can make the changes manually, it's impractical to do so because there are so many. Instead, you should use a third-party utility that enables global search-and-replace in the registry. There are a handful of utilities that provide that capability, and a search on the Internet or popular download sites should turn up at least one or two. The one used in this example is Registry Toolkit from Funduc Software, Inc. (http://www.funduc.com), which is licensed as shareware with a nominal fee.


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