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Mac OS 9
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{{Short description|Ninth and last major release of the classic Mac OS (1999)}} {{About|the ninth major release of the classic Mac OS|version 10.9 of macOS (formerly OS X)|OS X Mavericks}} {{Infobox OS version | name = Mac OS 9 | screenshot = Mac OS 9.0.4 emulated inside of the SheepShaver emulator.png | family = [[Macintosh operating systems|Macintosh]] | caption = Screenshot of Mac OS 9.0.4 | developer = [[Apple Computer]] | version of = [[classic Mac OS]] | logo = MacOS9.png | logo size = 64px | source_model = [[Closed source]] | first_release_date = {{Start date and age|October 23, 1999}}<ref>{{Cite web |title=October 23, 1999: Mac OS 9 Released |url=http://www.applematters.com/article/october-23-1999-mac-os-9-released/ |access-date=2009-11-28 |publisher=AppleMatters}}</ref><ref name="October 23, 1999: Mac OS 9 Released [Archive] - Mac Forums">{{Cite web |title=October 23, 1999: Mac OS 9 Released [Archive] - Mac Forums |url=http://forums.macrumors.com/archive/index.php/t-244958.html |access-date=2009-11-28}}</ref><ref name="October 23, 1999: Mac OS 9 Released - MacBytes.com">{{Cite web |title=October 23, 1999: Mac OS 9 Released MacBytes.com |url=http://forums.macrumors.com/showthread.php?t=244958 |access-date=2009-11-28 |publisher=MacRumors.com}}</ref> | working_state = Historic, unsupported | release_version = 9.2.2 | release_date = {{Start date and age|2001|12|05}} | release_url = https://support.apple.com/kb/DL1293?locale=en_US | preceded_by = [[Mac OS 8]] | succeeded_by = {{plainlist| *[[Mac OS X 10.0]] *[[Mac OS X Server 1.0]]}} | supported platforms = [[PowerPC]] | kernel_type = [[Nanokernel]] | ui = [[Appearance Manager|Apple Platinum]] | license = Proprietary | website = {{webarchive |url=https://web.archive.org/web/20001109004000/http://www.apple.com:80/macos/ |date=November 9, 2000 |title=Apple - Products - Mac OS 9}} | tagline = Your Internet co-pilot. | support_status = Historical, unsupported as of February 1, 2002<!-- approximate date of template insertion for dating hidden maintenance categories --> }}{{classic Mac OS sidebar}} '''Mac OS 9''' is the ninth and final major release of the [[classic Mac OS]] [[operating system]] for [[Mac (computer)|Macintosh]] computers, made by [[Apple Inc.|Apple Computer]]. Introduced on October 23, 1999, it was promoted by Apple as "The Best Internet Operating System Ever",<ref name="October 23, 1999: Mac OS 9 Released">{{Cite web |title=October 23, 1999: Mac OS 9 Released |url=http://www.applematters.com/article/october-23-1999-mac-os-9-released/ |access-date=2009-11-28 |publisher=AppleMatters.com |archive-date=2009-10-28 |archive-url=https://web.archive.org/web/20091028093711/http://www.applematters.com/article/october-23-1999-mac-os-9-released/ |url-status=live }}</ref> highlighting [[Sherlock (software)|Sherlock 2]]βs Internet search capabilities, integration with Apple's free online services known as [[MobileMe#iTools|iTools]] and improved [[Open Transport]] networking. While Mac OS 9 lacks [[protected memory]] and full [[pre-emptive multitasking]],<ref name="Pre-emptive Multitasking">{{Cite web |title=Re: newbie question: What is a Blue Task |url=http://lists.apple.com/archives/Mt-smp/2001/May/msg00007.html |url-status=dead |archive-url=https://web.archive.org/web/20071013225430/http://lists.apple.com/archives/Mt-smp/2001/May/msg00007.html |archive-date=2007-10-13 |access-date=2007-03-29 |publisher=Apple.com}}</ref> lasting improvements include the introduction of an automated [[Apple Software Update|Software Update]] engine and support for [[multi-user|multiple users]]. It was succeeded by [[Mac OS X 10.0]] in 2001, the first version of the [[MacOS|Mac OS X]] (now macOS) family of operating systems. Apple discontinued development of Mac OS 9 in late 2001, transitioning all future development to Mac OS X. The final updates to Mac OS 9 addressed compatibility issues with Mac OS X while running in the [[Classic Environment]] and compatibility with [[Carbon (API)|Carbon]] applications. At the 2002 [[Worldwide Developers Conference]], [[Steve Jobs]] began his [[keynote]] address by staging a mock funeral for OS 9.<ref name="Apple WWDC 2002-The Death Of Mac OS 9">{{Cite web |title=Apple WWDC 2002-The Death Of Mac OS 9 |url=https://www.youtube.com/watch?v=Cl7xQ8i3fc0 |url-status=live |archive-url=https://web.archive.org/web/20100418212841/http://www.youtube.com/watch?v=Cl7xQ8i3fc0 |archive-date=2010-04-18 |access-date=2010-03-16 |publisher=YouTube.com}}</ref>
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