Windows 2000 Family Professional

Windows 2000 Family Professional is an operating system for emulators and etc mainly, loading older versions of Windows.

Operating systems are included

 * Windows 1.0
 * Windows 2.0
 * Windows 3.0
 * Windows 95
 * Windows 98
 * Windows 2000 Beta

Dev_777_Build 186
This build is the earliest known build confirmed and to be found on the MSDN Developer Forums around January 1999 being mentioned over 30 times. Bill Gates even mentioned this build in the 2000 Build Event hosted 3 months later. However, most thought this build was compiled around December of 1998 but, just 10 minutes after the 2000 Build Event hosted by Bill Gates. The build's screenshots were leaked however showing only the desktop and the bootscreen itself. But, the desktop's screenshot looks like it's one of those first ever developer builds of Windows 2000 from 1997-1998. On the other hand, the bootscreen of this build appears as Memphis but, it has nothing based on it as confirmed by searching in the system32 folder. However, this build has not been leaked, ever since the introduction of Windows 2001 Family Professional in 2002.

Dev_1267_Build 1470
This build is the only earliest leaked and complied build being published on January 22, 2004, by Jon Lordstick on the archives network for operating system builds. This build is also is the earliest build to ever get leaked. According to this very early release note, the build was to be compiled around late 1999 and, no earlier than 2000. Now, for the release notes it actually was changed later on around March 2000's public beta for developers. For its release notes there's a document called "developmentnotes.txt" if opened it will appear:

Copyright (c) 1999 Microsoft. All rights reserved. Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that the software was developed by the. The name of the may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Dev_1667_Build 1924
This build was compiled and leaked by John Broomstick on July 11, 2008. The boot screen identifies itself as "Windows 2000 Server" instead of the "Windows 2000" boot screen which you'll usually see on developer builds of versions of Windows that are based on Windows 2000. Which, this had a lot of rumors going around about a brand new operating system based on Windows X.XX Server. Some also said that Microsoft must of killed the Windows 2000 idea. But, really when reconfirming and checking it over again the only thing that was added is a 64 Bit mode and Hyper-V support that's why it was based on "Windows 2000 Server" as mentioned on the boot screen. This build on the other hand was seemed to be complied around January 2000 according to release notes, speaking of which the release notes haven't got changed the only thing that got changed was, the word "January 2000" which had been added. The login screen now looks like Microsoft Neptune's design and the control panel itself looks similar to Windows XP's design and the explorer as well.

Dev_1418_Build 2400
This build was publicly released for the Beta developers worldwide on March 3, 2000, there are three changes to this build. Firstly, is it's boot screen now shows a modified version of the Windows 2000 Server removing the word "Server" from its name and just calling it just "Microsoft Windows". Secondly, a change was made to update the document files on the registry mainly, to increase performance to emulate these versions of Windows by using .iso files. Lastly, is the license it has now been officially updated so, developers can modify it's source code now since it's completely free and open-sourced only for this build any others remain shut. The license change can be seen here: Copyright (C) 1999, 2000 by Microsoft Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Dev_1288_Build 2700
This build was officially released to public developers even non-beta members on April 29, 2000 and for developing manufacturers on November 27, 1999.

This release build highlights the following changes:
 * Redesigned bootscreen.
 * Now supports both 32 and 64 Bit operating systems on install.

Triva

 * Even though it's not officially supported, Windows XP can be run by using custom versions of specific files.