Windows Codename Roundhouse

Windows Codename Delta is codename of Windows OMV. It is also known as Windows OMV, due to it's name. It is a successor of Windows 2000 Datacenter Server. As for OMV it is named after Austrian petrol station (because it was made with collaboration with HagsBurg Inc./Kadishenware and OMV, specially designed for computers in OMV) as for Delta it is named after fourth letter of Greek alphabet and seventh letter of Pearler alphabet.

Pre-Nashville
Before Windows Cleveland was released, there was Windows 95 OSM. In 1996 Microsoft released a build of Windows 95 called build 4.10.999. However it is codenamed Cleveland.

Pre-Seven, "Nashville"
Later, the build is renamed from "Cleveland" to "Nashville". Due to Windows NT 4.0 and development of Windows 98 it is cancelled and original build was merged in order to develop Windows Memphis. The release intended to focus on a tighter integration between Windows and Internet Explorer, in order to better compete with Netscape Navigator. After the deal with Hagsburg(now Kadishenware) it is reset with a Plus pack, an early version of Outlook and a new version of Internet Explorer. Later, the reset build being merged with NT project "Seven" to form Windows Codename: Antarctica.

"Seven"
During development of Windows NT 5.0 Microsoft made a deal with HagsBurg Computers Inc. to collaborate on a NT Project to compete with HagsBurg's competitor Nashan Software Corp., which have already collaborate with Apple Inc. However Bill Gates hated the fact, that Delta OS is open source, which HagsBurg/Kadishenware made, and snap out of It, which to make a variation of NT kernel with key features of Delta OS and Delta DOS kernels, to make a Delta-like NT project (Delta-like means OS behaving in a similar manner to or being compatible to either Delta OS, Delta OS or both).

In late 1996, they created the Windows codename: Seven build 7777.7, which is updated version of Windows 5.0 Beta 1. It introduced logon screen, firewall, new start menu, start screen and Internet Explorer 7.7. It is planned to be released in July 7 1997. Several Seven builds were part of early Windows NT 5.0 builds. However, the project proved to be too ambitious. Later builds featured Delta OS-esque features. They merged reset Windows Nashville from 9x and Windows codename Seven to form Windows Codename: Antarctica in May 1997. Because of bankrupcy caused by the sabotage, Hagsburg is refounded as Kadishenware, but keeps the collarobation with Microsoft.

"Antarctica"
In 1997, Windows Antarctica was formed, and planned to be released in mid 1999. However,due to builds of Windows 2000 (NT 5.0), which Third Edition was released three days before first build of Beta 3), it is updated. Build 1111.1 It introduced Microsoft Office 1999, Microsoft Dream Browser, and Emergency mode. The last build known is build 1200.5.

Pre-Development
The Odyssey document confirms there would be new variantion of Windows Server 2000. Later, it would given a codename Bloom. However, later documents renamed Bloom to Delta. As stated in confidental document, Delta is originally planned as a Windows Server 2000 variation. This changed in August 5 1999.

Development
Five days after the release of Windows 2000, Windows Antarctica was renamed to Windows Codename Delta by adding Windows 2000 Datacenter features to the Windows NT 5.0 Third Edition features and Windows Antarctica features. On build 2000.0 there was a debate when is this actual pre-alpha of Windows OMV or post RTM build of Windows 2000 Datacenter Server. However, the only exception of this combined build is the rare boot screen with "Datacenter Server" instead of "Server Family". This means the beta testers and users to not confusing the build with the Server and Advanced Server ones. The "SD" in the build tag refers to a new code management system that Microsoft was developing ("Source Depot"). Build 2004.6 has bug fixes and many security patches, featuring some elements from early Windows Chicago. Build 2009.5 has elements from Plus for Windows 95 and 98, Microsoft Plus! Game Pack: Cards & Puzzles, Microsoft Plus! for Kids!, Windows For Pen Computing 2.0 ,WinG. First appearance of the word "Delta" is in build 2009B.8. In build 2012.8 it introduces startup and shutdown screens. At WinHEC in January 31 2000, Microsoft officially announced and presented an early build of Delta (build 2020.4), focusing on a new modularized architecture, built-in CD burning, fast user switching, fast boot, and updated versions of the digital media features and other features introduced by ME, also featuring OOBE. Build 2020.9 introduced logoff screen. At build 2072.8 (A.K.A Pre-Developer Release) bootscreen "Microsoft Windows 2000 Datacenter Server" was renamed to "Microsoft Codename: Delta" dropping "Datacenter Server" because this Windows version was special for Kadishenware's "Delta OS" a server OS. At build 2022.9 it introduced white version of Windows Standard theme, later to be known as "Prototype". Build 2042.5 imports features from PocketPC 2000 and Windows CE 3.0. Build 2051.2 has features from Windows NT 4.0 Terminal Server. Build 2054.6 introduced new startup and shutdown sounds. The startup sound is reversed Windows 2000 build 2000 startup. The shutdown sound is chime assemble with turning and transforming into Windows 98 startup sound, ending with it's RTM shutdown sound. The logon sound is Windows CE startup and the logoff sound is Windows 2000 build 2000 shutdown sound, with mixture of it's RTM version. It also introduced updated version of 98 error,notify and ding. It also introduced new sound: balloon sound(also introduced balloon), excalmation sound, critical sound,asterisk sound, battery low sound and battery critical sound. It keep the start-up and shutdown sounds of previous versions. Build 2062.6 introduced VoiceSearcher. Build 2069.6 introduces MS-DOS real mode and parts from Windows 9x kernel, along with Microsoft Works, Microsoft Money preinstalled. Tev Hanamadski contiunes development of Neptune and Odyssey, however, puts it on held as he stated they have same features with Codename Delta. Build 2098.4 features Neptune Activity Centre ported from Neptune, later was renamed to Activity Centre during the development. Developer release was released in March 9 2000, build 2143.9 ,the Windows 2000 Server logo was replaced by normal Windows 2000 logo. Prealpha version was released in May 7 2000, build 2176.7. Techincal Alpha was released in June 1 2000, build 2200.0. Alpha version was released in June 5 2000,build 2222.2. It introduces variety of features, such as sidebar, modified version of TaskGallery. Pre-Beta version was released in June 23 2000, build 2230.8. Omega-7 is released in June 17 2000, build 2245.7. introducing Superbar for Prototype, as an hidden extra. It featured updated version of Start button, similar to start button Whistler 2296 build. Technical Beta was released in July 8 2000,build 2255.6. Beta 1 was released in May 13 2001, build 2311.5. Beta 1.5 was released in May 17 2001, build 2375.6 Pre-Beta 2 Fork is released in May 19 2001, build 2378.6. Beta 2 was released in June 31 2001, build 2400.0. with start button from Whistler 2257. Beta 2.5 was released in September 1 2001, build 2419.8. Beta 2.5.7 was released in September 10 build 2428.5. Beta 2.6 was released in September 17 2001, with start button from Whistler build 2250. The last build before official name of the project has revealed is build 2489.9., with Xbox app preinstalled. Then Windows Delta will be known as Windows OMV. The choice began on September 15 2001 and ended on September 20 2001. There were three choices.

"OMV"
Originally, Windows Delta should named choice of either "Windows.NET" or "Windows 2001" or even "Windows NT 5.5". The most popular choice was Windows.NET. Before Windows OMV was confirmed, Bill Gates think, that none of them will be used, due to changed plan. The plan changed because of the OS was not even fully finished for year 2001, server has not improved and Windows Codename Delta is being different to Windows 2000. Neither does Tev Hanamadski. Before Windows Nashville being developed, Bill Gates went to Vienna while the others were on Greece, everytime when his european car's gas is running out he went to OMV. He states, that OMV is his favorite european petrol station. Many OMV employees worked at Microsoft. This made Tev being confused. Newly reformed company Kadishenware think it is ambitious, choice is logo of OMV or the text itself. Most of employees choosed the logo, since the OS was made with partnership and friendship of Kadishenware and OMV. Tev Hanamadski agreed. The concept of Windows OMV beta was began in September 23 2001. October 3 2001, Windows OMV Beta 2.7 was released, build 2490.1. Beta 2.9 was released in October 10 2001, build 2500.0. Beta 3 was released in October 29 2001, build 2533.8. Final Beta Release was released in November 23 2001, build 2540.4. The last build ever to include the word "Delta" is 2540.0. Final Beta Release include Luna, Royale, Zune, Embedded, Watercolor, and Chartreuse Mongoose themes, other than Prototype theme. Release Preview was released in December 9 2001, build 2555.5. Community Technology Preview was release in December 12 2001, build 2557.9. Release Candidate 0 was released in December 13 2001, build 2560.9. Release Candidate 1 was released in December 22,2001,build 2575,9. Release Candidate 2 was released in December 28 2001, build 2590.6. Pre-RTM build of Windows OMV was released in January 3 2002 build 2591.3. RTM Escrow build was released in January 7 2002, build 2592.0. Public Testing build was released on January 8 2002, build 2592.5. Stability and Security Testing was released on January 9 2002, build 2592.9 RTM of Windows OMV was released in January 10 2002, build 2593.5. General availability of Windows OMV was released in January 19 2002, build 2595.7. Release to web of Windows OMV was released at January 24 2002,build 2599.1. Windows OMV officially released at February 22 2002, build 2600.0. After this release, Microsoft and Kadishenware end their partnership, because there's nothing else to do with Windows OMV for Kadishenware. Moreover, Tev Hanamadski and Kadishenware were credited for starting the development as Seven.

Theme Packs
Prototype Theme

Windows Classic

Windows Aero

Service Pack
There are 8 service packs and 2 rollup and 1 security rollup. First was released in May 13 2002. Second was released in July 4 2002. Third was released in August 30 2002. Fouth was released in September 29 2002. First rollup was released in October 11 2002. Fifth (Halloween service pack) was released in October 31 2002. Sixth was released in November 30 2002. Service Pack 6a (X-mas and Tez Barack update) was released in December 25 2002. Second rollup was released in December 29 2002. Seventh was released in January 1 2003. Security rollup was released in May 13 2004. The updated version of security rollup was released on May 20 2004. The Second Edition was released in December 1 2004.Anniversity update was released in October 2005. The November update was released in November 10 2005. The Creators Update was released in December 4 2005. Power pack was released on January 10 2006. The post-RTM build was released on Febuary 29 2008. The Plus pack was released on March 10 2008. The OEM feature was released on April 3 2008. The third edition was released on May 13 2008. Windows OMV R2 was released on October 3 2008. Delta update was released on December 5 2008. Emergency patch was released on May 13 2017 and May 16 2017. The updates were being followed one by one. The source model is shared source, and it's kernel is mixture of 9x and NT one.

The Japanese Edition was released to Japanese market on February 22 2010 as 8 year anniversary. And it's updated on May 17 2017.

Features
Prototype - A theme used for the OS

Sidebar - A sidebar, similar to the one, used in Longhorn and Windows Vista, haves features mixed with these from Sideshow.

Transparent - Taken from Windows Zeus, allows user to turn the taskbar and sidebar into transparent.

Versions

 * Editions
 * Original
 * Service Pack 1
 * Service Pack 2
 * Service Pack 3
 * Ultraserver
 * Service Pack 4
 * Service Pack 5
 * Service Pack 6
 * Service Pack 6a
 * Office Server
 * Candidate Release
 * Preinstallation Environment
 * Windows Codename Delta 10 (Released in February 22, 2017) (It has components of Windows 10 Creators Update pre release versions, but still look like and has charm of original counterpart. It supports latest Microsoft products)
 * Developer Version
 * Service Pack 7
 * Service Supreme Pack
 * PDA
 * WinG Add-on
 * Open-Source
 * Fax Server
 * Web Server
 * R2
 * Small Business
 * Home Server (Released in 2007)
 * x64
 * WorkStation
 * Embedded
 * Embedded POSReady 2008
 * Enterprise Server
 * Advanced Server
 * Standard Server
 * School Server Edition
 * Single Language
 * Enterprise LTSB*
 * N edition (without Windows Media Center/Player)
 * Client Server
 * Cloud Server
 * For Workgroups
 * Embedded Server
 * KN Edition (Korean version without Windows Media Center/Player)
 * EUR Edition
 * Multipoint Server
 * Demo Edition (For users, that are unfamiliar with Windows OMV)
 * Server Essentials
 * Essential Business Server
 * HPC Server
 * Storage Server
 * Compute Cluster Server
 * Small Business Server
 * Inari-Taisha Edition (Basically Windows OMV with Windows 2000 Codename Inari-Taisha features, which also includes Yamashita Edition, Kinkaku-ji Edition, Japanese Edition, Plus! and MangaReader)
 * Datacenter Server
 * Thin Server

Support
End of life announcement was on May 1 2010. Last order date was ended on April 18 2011. Mainsteam support ended on April 20 2011. Remaining mainsteam support ended on June 1 2017. Extended support end on May 13 2018. Remaning extended support ends on December 31 2020. However, due to Wannacry and Petabyte ransomware virus, Microsoft released emergency patches for Windows OMV, XP and Server 2003. One is from May 15, the other one is from 4 July 2017. Only 1% of infected computers are using Windows OMV. Aftermath, the latest Windows Defender version is required for 2000 and OMV, through the original version is kept. Like XP, it ended up in BSOD, instead of being encrypted. Extended security maintenance is 31 December 2025.

Trivia

 * So far, Windows OMV is the longest Windows version ever developed. If one counts Windows Nashville, it makes it even longer.
 * It was unknown if there are any reset build of Windows Nashville. Beta-testers believe, that there are some. There are build 4.10.1055 and 4.10.1167. It is unknown if they are real or fake.
 * Before the name is revealed, Beta-testers give a new name for new Windows version. The fan-name is Windows Server 2002. (Coincidentally, Windows OMV is Windows Server 2002, just not the beta testers excepted)
 * It was unknown what build is concept build of Windows OMV. Until 2010, Beta-testers analysed that the concept version of the build is build 2406.8.
 * Windows Powered Family was released during Windows OMV development. The Advanced Server version of Windows Powered share same things as Windows OMV. https://www.youtube.com/watch?v=t-I2tVrClLo. Then Neptune and Odyssey had survived: https://www.youtube.com/watch?v=lui0dQhcsNI, https://www.youtube.com/watch?v=MjeBmQVZWTE. This means that they are successor of Windows OMV.
 * Windows OMV is a sister/brother to Windows 2000 according to either Apple Inc, or due to pre-Development Release.
 * Unlike every other Windows OS since 2003, Windows OMV doesn't have it's normal counterpart, though this is a server OS. It does have desktop editions, but they were used for server works.
 * The features of Windows Powered were added to Windows OMV during development of seventh service pack.
 * The Prototype theme in post-Alpha releases looks identical to Luna from Windows XP, with mixture of Watercolor from Whistler.