Editing Installation 01

{{Era|Forerunner|HCW|Post}}
{{Megastructure infobox
|image=[[File:surface07.jpg|300px]]
|description=Desert-like landscape<ref name="Encyclopedia">'''[[Halo Encyclopedia: The Definitive Guide to the Halo Universe]]''', ''page 174'' (2009); ''page 184'' (2011)</ref>
|location=[[Orion Arm]],<ref name="warf12">'''´Halo: Warfleet'', p. 12</ref> [[Milky Way]]{{Ref/Reuse|Encyclopedia}}
|anchor=
|type=[[Halo Array|Halo installation]]{{Ref/Reuse|Encyclopedia}}
|function=*Galactic sterilization<ref name="halo array">[https://www.halowaypoint.com/en-us/universe/tech/halo-array '''Halo Waypoint''': ''Halo Array'']</ref>
*[[Flood]] containment and research{{Ref/Reuse|halo array}}
|caretaker=[[Monitor]] [[001]]
|constructed=c. [[97,445 BCE]]{{Ref/Reuse|halo array}}
|destroyed=Deactivated from [[Installation 00]]<ref name="hitd262">'''[[Halo: Hunters in the Dark]]''', ''pages 262-264'' (Google Play edition)</ref>
|destroyed-title=Status
|diameter={{Convert|10000|km|mi|sp=us}}{{Ref/Reuse|Encyclopedia}}{{Ref/Reuse|halo array}}
|surface width={{Convert|318|km|mi|sp=us}}{{Ref/Reuse|Encyclopedia}}{{Ref/Reuse|halo array}}
|gravity=
|surface temperature=
|atmosphere=
}}

'''Installation 01''', also known as '''Beta Halo''',<ref name="source">[[:File:H3 halo inner ring title.PNG|Halo 3 Texture files: ''halo_inner_ring'']]</ref> is one of the [[seven]] ring-shaped superweapons that comprise the [[Forerunner]]s' [[Halo Array]]. One of two Halos located in the [[Orion Arm]] (the other being [[Installation 04]]),{{Ref/Reuse|warf12}} Installation 01 is the farthest Halo from [[Installation 00]]. It features a limited atmosphere and a desert-like landscape.{{Ref/Reuse|Encyclopedia}}

==History==
===Construction and early history===
The [[Forerunner]]s had Installation 01 constructed by the [[Foundry]] of [[Installation 00]]<ref name="p371">'''[[Halo: Primordium]]''', ''page 371''</ref> approximately around the same time as the rest of the [[Halo Array]], circa [[97,445 BCE]] during the [[Forerunner-Flood war]].{{Ref/Reuse|halo array}}<ref>[https://www.halowaypoint.com/en-us/community/blog-posts/canon-fodder-array-with-words '''Halo Waypoint''': ''Canon Fodder - Array With Words'']</ref> The array was designed by the Forerunner [[Builder]]s to combat the parasitic [[Flood]] by eradicating them and all [[Sentience|sentient]] life in the [[Milky Way]]. After the rings were built, Installation 01 and its fellow Halos were distributed from Installation 00 to positions across the galaxy through [[slipstream space]] [[Slipspace portal|portals]],{{Ref/Reuse|halo array}}<ref>'''[[Halo Legends]]''', ''[[Origins]]''</ref> with Installation 01 being positioned the furthest from the Ark.{{Ref/Reuse|Encyclopedia}}

Afterwards, the Halo Array was [[Great Purification|fired]] and eradicated all sentient life from the galaxy. The Forerunners proceeded to [[Reintroduction|reseed]] the galaxy with life from the species that were [[Conservation Measure|preserved]] on the Halo installations. Like its fellow installations, Installation 01 became home to dormant specimens of the Flood that were intended to be used to help find a cure to the parasite in the future. With the Flood defeated, the surviving Forerunners exiled themselves from the galaxy.{{Ref/Reuse|halo array}}

===Human-Covenant War===
{{Quote|Fail-safe protocol: In the event of unexpected shutdown, the entire system will move to standby status. All remaining platforms are now ready for remote activation.|[[343 Guilty Spark]], after the Halo Array is placed into standby mode<ref name="great journey">'''[[Halo 2]]''', campaign level, ''[[The Great Journey]]''</ref>}}
On [[2552#November|November 3, 2552]], during the [[Battle of Installation 05|Battle]] of [[Installation 05]], [[Chieftain of the Jiralhanae|Chieftain]] [[Tartarus]] of the [[Covenant]] activated Installation 05, though [[United Nations Space Command]] and [[Sangheili]] forces managed to terminate the firing sequence before the Halo could fire. As per fail-safe protocol in the event of an unexpected shutdown, a signal was sent to Installation 01 and the rest of the Halos from Installation 05, placing all Halos of the array on standby mode, ready for remote activation from Installation 00. A readout from Installation 05's [[Control Room|control room]] showed that Installation 01 was fully prepared to fire on demand.{{Ref/Reuse|Encyclopedia}}{{Ref/Reuse|great journey}}

However, during the [[Battle of Installation 00]] on [[2552#December|December 11, 2552]], the UNSC and allied Sangheili forces fought to prevent the Covenant from firing the Halo Array from the Ark, as Installation 01 and its fellow Halos were still in standby mode and was prepared to receive the signal to fire. Eventually, [[Master Chief Petty Officer]] [[John-117]] succeeded in deactivating Installation 01, as well as the rest of the array, before it could be fired.<ref>'''[[Halo 3]]''', campaign level, ''[[The Covenant]]''</ref>

===Post-Covenant War===
In [[2555#March|March of 2555]], [[monitor]] [[000 Tragic Solitude]] of Installation 00 utilized [[Bobby Kodiak|a captured human]] to activate the Halo Array's firing sequence, triggering a countdown set for the Halos firing in five weeks from [[2555#March|March 8, 2555]].<ref>'''Halo: Hunters in the Dark''', ''pages 39-42'' (Google Play edition)</ref> After discovering the countdown on [[Installation 07]], the UNSC and [[Swords of Sanghelios]] launched a [[Operation: FAR STORM|joint operation]] to Installation 00 in which a team destroyed Tragic Solitude and ended the Halo Array's firing sequence.{{Ref/Reuse|hitd262}}

==Description==
Like its fellow ring installations of the [[Halo Array]], Installation 01 is approximately 10,000 kilometers (6,200 miles) in diameter and has a surface width of 318 kilometers (198 miles).{{Ref/Reuse|Encyclopedia}}{{Ref/Reuse|halo array}} Perhaps due to its primary designation within the array, Installation 01 was designed by the [[Forerunner]] [[Builder]]s with a very simple environment in mind. Instead of the verdant landscapes seen on most of the other rings, Installation 01's environment is comprised of a large desert with a limited atmosphere; this may have been by design, due to a lack of proper maintenance or some other incident after the original firing of the Halo Array. The farthest Halo from [[Installation 00]], the Halo was capable of wiping out all [[Sentience|sentient]] life in a 25,000 light-year range, along with its fellow Halo installations.{{Ref/Reuse|Encyclopedia}}

==Gallery==
<gallery>
File:Int1.jpg|The symbol representing Installation 01
File:Halo ring 2.png|The surface of Installation 01
</gallery>

==List of appearances==
*''[[Halo 2]]'' {{C|Hologram only}} {{1st}}
*''[[Halo 3]]'' {{C|Hologram only}}
*''[[Halo Legends]]''
**''[[Origins]]''
*''[[Halo: Combat Evolved Anniversary]]''
**''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''
*''[[Halo 2: Anniversary]]'' {{C|Hologram only}}
**''[[Terminal (Halo 2: Anniversary)|Terminals]]'' {{C|Hologram only}}
*''[[Halo: Hunters in the Dark]]'' {{C|Hologram only}}
*''[[Halo: Official Spartan Field Manual]]'' {{Mo}}

==Sources==
{{Ref/Sources}}

{{Forerunner|array|category=no}}

[[Category:Halo Array]]