OS X Yosemite
OS X 10.10 Yosemite
A version of the macOS operating system
OS X Yosemite Desktop.png
The default desktop of OS X Yosemite.
Developer Apple Inc.
OS family
Source model Closed source (with open source components)
Released to
October 16, 2014; 2 years ago (2014-10-16)
Latest release 10.10.5 (Build 14F27)[2] / August 13, 2015; 2 years ago (2015-08-13)
Update method Mac App Store
Platforms x86-64
Kernel type Hybrid (XNU)
License APSL and Apple EULA
Preceded by OS X 10.9 Mavericks
Succeeded by OS X 10.11 El Capitan
Official website Apple - OS X Yosemite at the Wayback Machine (archived August 28, 2015)
Support status
Unsupported as of September 2017

OS X Yosemite ( yoh-SEM-it-ee) (version 10.10) is the eleventh major release of OS X (now named macOS), Apple Inc.'s desktop and server operating system for Macintosh computers.

OS X Yosemite was announced and released to developers on June 2, 2014 at WWDC 2014 and released to public beta testers on July 24, 2014. Yosemite was released to consumers on October 16, 2014.[3] Following the Northern California landmark-based naming scheme introduced with OS X Mavericks, Yosemite is named after the national park.

System requirements

All Macintosh products capable of running OS X Mountain Lion (v10.8.x) are able to run Yosemite as they have the same requirements.[4] However, in order to take full advantage of the Handoff feature, additional minimum system requirements include a Mac with Bluetooth LE (Bluetooth 4.0). As with Mavericks and Mountain Lion, 2GB of RAM, 8GB of available storage, and OS X 10.6.8 (Snow Leopard) or later are required.

These are the models that are compatible with OS X Yosemite (with exceptions):

  • iMac (Mid 2007 or later)
  • MacBook (Aluminum Late 2008 and Early 2009 or later)
  • MacBook Pro (13-inch, Mid-2009 or later; 15-inch, Mid/Late 2007 or later; 17-inch, Late 2007 or later)
  • MacBook Air (Late 2008 or later)
  • Mac Mini (Early 2009 or later)
  • Mac Pro (Early 2008 or later) (Can run on a mid-2006 version if one upgrades to a supported graphics chip and utilizes a custom bootloader)
  • Xserve (Early 2009)

These are the models that support new features such as Handoff, Instant Hotspot as well as AirDrop between Mac computers and iOS devices:[5]



Yosemite introduced a major overhaul of OS X's user interface. Its graphics replaced skeuomorphism with flat graphic design and blurred translucency effects, following the aesthetic introduced with iOS 7. Some icons have been changed to correspond with those of iOS 7 and iOS 8. Yosemite maintains the OS X desktop metaphor.[6]

Other design changes include new icons, light and dark color schemes, and the replacement of Lucida Grande with Helvetica Neue as the default system typeface.[7][8][9] The Dock is now a 2D translucent rectangle instead of a skeuomorphic glass shelf, reminiscent of the Dock design used in early versions of OS X through Tiger and in iOS since iOS 7.


Many of Yosemite's new features focus on the theme of continuity, increasing its integration with other Apple services and platforms such as iOS and iCloud.[10] The Handoff functionality allows the operating system to integrate with iOS 8 devices over Bluetooth LE and Wi-Fi; users can place and answer phone calls using their iPhone as a conduit, send and receive text messages, activate personal hotspots, or load items being worked on in a mobile app (such as Mail drafts or Numbers spreadsheets) directly into their desktop equivalent.[10]

Notification Center

Notification Center features a new "Today" view, similar to that in iOS. The Today view can display information and updates from various sources, along with widgets.[7][8] The widgets in the Today view are similar to those of iOS 8.


As of OS X 10.10.3, Photos replaces iPhoto and Aperture.[11] It uses iCloud Photo Library to upload all the user's photos across their devices.


Spotlight is a more prominent part of the operating system; it now displays its search box in the center of the screen and can include results from online sources, including Bing, Maps, and Wikipedia.[7] Stock applications such as Safari and Mail have been updated.[12] In particular, many security features have been added to Safari, such as a custom history clearing option that lets users clear history, cookies, and other data from the previous hour, day, or two days. In addition, Apple added DuckDuckGo to its search offerings, a non-tracking search engine that doesn't store users' data.[13] Safari allows you to remotely close tabs from an iOS device.[14]Safari now supports browsing in private browsing mode with certain windows (as opposed to all the windows having to be either in or out of private browsing).[15]

The green "zoom" button on windows now has a different function in applications that support full screen mode. Instead of simply enlarging the window, the button now enters full screen mode, eliminating the full screen button at the top right corner of windows that has been present since Mac OS X Lion. However, holding the Option key (?) while clicking the zoom button or double-clicking on the window chrome continues to invoke the original behavior.[16]:123-124

JavaScript for Automation (JXA) is the new system-wide support for scripting with JavaScript, built upon JavaScriptCore and the Open Scripting Architecture.[17] It features an Objective-C bridge which enables entire Cocoa applications to be programmed in JavaScript.[18]

Along with other framework changes, CloudKit was integrated in this release.[19] CloudKit functions as a Mobile Backend as a Service (MBaaS) and is one method for App developers to integrate access to Apple's iCloud servers into their apps.[20]

There is a "dark mode" in System Preferences which makes the dock and menu bar darker.[14]

Beta testing

Apple initiated a new public beta program for OS X, a practice not seen with its operating systems since 2000's US$29.95 Mac OS X Public Beta, which had preceded the release of Mac OS X v10.0. Yosemite is part of the OS X Beta Seed Program, a public program that allows the first 1 million[21] users to download and test the Yosemite beta at no charge. Beta testers are required to acknowledge the potential risks involved with prerelease software, and sign a non-disclosure agreement (NDA).[22] The program began releasing Public Betas on July 24, 2014.[23] Six public betas of Yosemite were released.

Release history

Version Build Date OS name Notes Standalone download
10.10 14A389 October 16, 2014 Darwin 14.0 Original Mac App Store release N/A
10.10.1 14B25 November 17, 2014 About the OS X Yosemite v10.10.1 Update OS X Yosemite 10.10.1 Individual update
10.10.2 14C109 January 27, 2015 Darwin 14.1 About the OS X Yosemite v10.10.2 Update OS X Yosemite 10.10.2 Individual update

OS X Yosemite 10.10.2 Combo update

14C1510 (Security Update 2015-002) March 9, 2015 Security Update 2015-002 Yosemite
14C1514 (Security Update 2015-003) March 19, 2015 Security Update 2015-003 Yosemite
14C2043 (Pre Security Update 2015-003)
March 10, 2015 Shipped with Early 2015 MacBook Air - Forked build. N/A
14C2513 (Security Update 2015-003)
March 20, 2015
10.10.3 14D131 April 8, 2015 Darwin 14.3 About the OS X Yosemite v10.10.3 Update

This release unified the previously forked build for the early 2015 MacBook Air

OS X Yosemite 10.10.3 Individual update

OS X Yosemite 10.10.3 Combo update

14D136 (Supplemental Update) April 16, 2015 Fixes issue with video driver issue that may prevent Mac from starting up when running certain apps that capture video. OS X Yosemite 10.10.3 Supplemental Update 1.0
10.10.4 14E46 June 30, 2015 Darwin 14.4 About the OS X Yosemite v10.10.4 Update OS X Yosemite 10.10.4 Individual update

OS X Yosemite 10.10.4 Combo update

10.10.5 14F1509 August 13, 2015 Darwin 14.5 About the OS X Yosemite v10.10.5 Update OS X Yosemite 10.10.5 Individual update

OS X Yosemite 10.10.5 Combo update
OS X Yosemite 10.10.5 Security update 2016-006

14F2109 December 13, 2016 About the security content of Security Update 2016-007 Yosemite Security Update 2016-007 Yosemite
14F2511 July 19, 2017 About the security content of Security Update 2017-003 Yosemite Security Update 2017-003 Yosemite


On release, Yosemite received generally positive reviews, with users praising the simplified user interface. Programmer John Siracusa, who had reviewed every OS release, wrote for Ars Technica that "Yosemite is an aesthetic one-way valve... switching back to Mavericks after a week or two in Yosemite is like returning to iOS 6. Everything looks embarrassingly chunky, glossy, and gaudy."[24] Macworld's review generally praised Yosemite for its design, but noted that it had found WiFi network issues and that Continuity had proved unreliable.[25] While many reviews in the press praised the new design aesthetic, users were often left baffled with these statements[]. Widespread disagreement and contention could be found in the comment sections of articles discussing the design of the revamped interface[]. While some praised the changes as new and fresh, others complained about flattened, hard to distinguish buttons reducing usability[]. Other critiques concluded the new look to be generally ugly, bright, overly saturated, childlike, or comparing the aesthetic to 'Fisher-Price'[].


As Yosemite entered general release and stability/performance problems on the initial release did not seem to have been resolved, an ongoing discussion began to develop among prominent developers and webloggers about Apple software quality and stability. (This issue may not have been noticed earlier since many initial-release reviewers review from betas, which are expected to contain some bugs, and therefore tend to focus on features rather than stability unless stability is still completely unacceptable at release date; wider use may also highlight some more obscure bugs.)

Yosemite faced particular problems with network stability and the discoveryd DNS system. Because of this, Apple reverted discoveryd back to the mDNSResponder system (used in Mavericks) in 10.10.4.[26] Another notable bug experienced on Yosemite was the 'unicode of death' problem, following a similar bug in 2013, in which a meaningless Arabic text string could crash applications using the system text-display APIs.[27] Some users that upgraded to Yosemite complained that the Finder fails to show the contents of folders.[28]

Software developers and users have argued that Apple's yearly release schedule and development practices have compromised stability, and meant that no version of OS X is truly recommendable for users requiring reliability above new user interface design and features.[29][30][31][32][33][34]

Spotlight on Yosemite by default reports the user's current location (at the city level) and all their search queries to Apple and third parties.[35][36][37][38] Reporting by Spotlight can be disabled by the user, although, even if this is done, the Safari web browser will continue to send search terms to Apple unless the function is separately disabled.


  1. ^ "OS X version 10.10 Yosemite on Intel-based Mac computers". The Open Group. Archived from the original on November 10, 2014. Retrieved 2014. 
  2. ^ "OS X Yosemite". Mac App Store. Archived from the original on September 24, 2015. Retrieved 2015. 
  3. ^ "Apple - OS X Yosemite - Overview". Apple Inc. (US). Archived from the original on July 16, 2013. OS X Yosemite. Coming this fall. 
  4. ^ "PSA: The iDevices and Macs that will support iOS 8 and OS X 10.10". Ars Technica. Archived from the original on June 3, 2014. Retrieved 2014. 
  5. ^ "OS X Yosemite: supported devices for Handoff, Instant Hotspot, Phone Calling, SMS, and AirDrop". Apple. Archived from the original on December 10, 2014. Retrieved 2014. 
  6. ^ "OS X Yosemite - Design". Apple Inc. Archived from the original on January 3, 2015. 
  7. ^ a b c "OS X Yosemite: Apple's latest desktop OS works even better with your iPhone". Engadget. Archived from the original on June 3, 2014. Retrieved 2014. 
  8. ^ a b "OS X Yosemite unveiled at WWDC, features big UI overhaul". Ars Technica. Archived from the original on June 3, 2014. Retrieved 2014. 
  9. ^ "Apple Changes OS X's Main Font For The First Time Ever". Fast Co Design. Archived from the original on October 16, 2014. Retrieved 2014. 
  10. ^ a b "OS X Yosemite - Mac + iOS Continuity". Apple. Archived from the original on November 11, 2014. Retrieved 2014. 
  11. ^ Gibbs, Samuel (16 April 2015). "Upgrading from iPhoto or Aperture to Apple's Photos? Read this". The Guardian. London. Retrieved 2017. 
  12. ^ "OS X Yosemite revealed: Translucent windows, cross-platform Continuity, and HTML 5 DRM come to the Mac". ExtremeTech. Archived from the original on June 3, 2014. Retrieved 2014. 
  13. ^ John Patrick Pullen (October 21, 2014). "These Are the 5 Coolest Features of OS X Yosemite". Time Inc. Archived from the original on December 31, 2014. 
  14. ^ a b Klosowski, Thorin. "Top 10 Hidden Features of OS X Yosemite". Lifehacker. Archived from the original on January 4, 2017. Retrieved 2017. 
  15. ^ "OS X Yosemite: Get to know the new, slimmed-down Safari". Macworld. Archived from the original on January 6, 2017. Retrieved 2017. 
  16. ^ "Adapting your app to the new UI of OS X Yosemite" (PDF). Apple Inc. June 3, 2014. Archived (PDF) from the original on July 28, 2014. Retrieved 2014. 
  17. ^ "JavaScript for Automation". MacStories. Archived from the original on September 19, 2014. Retrieved 2014. 
  18. ^ "JavaScript for Automation Release Notes". Apple, Inc. Archived from the original on September 4, 2014. Retrieved 2014. 
  19. ^ "OS X Yosemite v10.10 Developer Library". Apple Developer Library. Archived from the original on March 7, 2016. Retrieved 2016. 
  20. ^ "iCloud for Developers". Apple Developer. Apple. Archived from the original on March 4, 2016. Retrieved 2016. 
  21. ^ "OS X Beta Program". Apple Inc. Archived from the original on July 1, 2014. Retrieved 2014. 
  22. ^ "OS X Beta Program Frequently Asked Questions". Apple Inc. Archived from the original on July 2, 2014. Retrieved 2014. 
  23. ^ "Apple to release first public beta of OS X Yosemite on Thursday". AppleInsider. AppleInsider. July 23, 2014. Archived from the original on July 27, 2014. Retrieved 2014. 
  24. ^ Siracusa, John. "Yosemite review". Ars Technica. Archived from the original on July 8, 2017. 
  25. ^ Haslam, Karen. "Yosemite review". Macworld. Archived from the original on August 19, 2015. Retrieved 2015. 
  26. ^ "Latest OS X beta ditches buggy discoveryd DNS service, replaced with mDNSResponder". Apple Insider. Archived from the original on August 24, 2015. Retrieved 2015. 
  27. ^ Thomson, Iain. "That EVIL TEXT that will CRASH your iPhone: We pop the hood". The Register. Archived from the original on August 22, 2015. Retrieved 2015. 
  28. ^ Gewirtz, David (December 2, 2014). "When Yosemite went wonky: Fixing an OS X systems failure". ZD Net. Archived from the original on March 12, 2015. Retrieved 2015. 
  29. ^ Arment, Marco (January 4, 2015). "Apple has lost the functional high ground". marco.org. Retrieved 2015. 
  30. ^ Hockenberry, Craig (January 6, 2015). "Death by a thousand cuts". Furbo.org. Archived from the original on January 16, 2015. Retrieved 2015. 
  31. ^ Jalkut, Daniel (January 5, 2015). "The functional high ground". bitsplitting.org. Archived from the original on January 16, 2015. Retrieved 2015. 
  32. ^ Gruber, John (January 5, 2015). "Functional high ground". daringfireball.net. Archived from the original on January 28, 2015. Retrieved 2015. 
  33. ^ Snell, Jason (January 5, 2015). "Apple and software quality". sixcolors.com. Archived from the original on January 15, 2015. Retrieved 2015. 
  34. ^ English, Guy (January 5, 2015). "We Don't Need". kickingbear.com. Archived from the original on January 14, 2015. Retrieved 2015. 
  35. ^ "Fix Mac OS X Yosemite initiative". Archived from the original on October 20, 2014. 
  36. ^ Soltani, Ashkan; Timberg, Craig (October 20, 2014). "Apple's Mac computers can automatically collect your location information". Washington Post. Archived from the original on October 23, 2014. Retrieved 2014. 
  37. ^ Fox-Brewster, Thomas (October 20, 2014). "Spotlight: Privacy Advocates Furious As Apple Feature Siphons Off Location Data of Yosemite And iOS 8 Users". Forbes. Archived from the original on October 23, 2014. Retrieved 2014. 
  38. ^ Leyden, John (October 20, 2014). "FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for". The Register. Archived from the original on October 21, 2014. Retrieved 2014. 

External links

Preceded by
OS X 10.9
OS X 10.10
Succeeded by
OS X 10.11

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.


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