Chapters 5 and 6 described how to install and configure Microsoft Windows 2000 on a new or clean system. This chapter moves on to a topic that will probably be more immediately useful: upgrading to Windows 2000.
Because upgrading to a new network environment such as Windows 2000 involves so much more than simply running Setup, this chapter covers many aspects of the process. It discusses the architectural differences between Windows 2000 and prior versions of Windows and how these differences affect the upgrade process, as well as how to plan and prepare for upgrading Microsoft Windows NT domains. It also covers the actual upgrade process for Windows NT servers and Windows NT-based and Microsoft Windows 95/98-based clients. At the end of the chapter, you'll find information on making the transition from a mixed-mode domain with Windows NT and Windows 2000 domain controllers to a native Windows 2000 domain with only Windows 2000 domain controllers.