MacOS Sierra

macOS 10.12 SierraA version of the macOS operating system

macOS Sierra desktop

Developer| Apple Inc.
OS family|

* Macintosh
* Unix[1]

Source model| Closed, with open source components
Initial release| September 20, 2016; 9 years ago (2016-09-20)
|Final release|Latest release}}| 10.12.6 (16G2136)[2] / September 26, 2019; 6 years ago (2019-09-26)
Update method| Mac App Store
Platforms| x86-64
Kernel type| Hybrid (XNU)
License| APSL and Apple EULA
Preceded by| OS X 10.11 El Capitan
Succeeded by| macOS 10.13 High Sierra
Support status
Unsupported. Extended support ended in October 2019 and iTunes ends in August 2020.
Part of a series on

macOS

Features

* History
* Transition to Intel processors
* Architecture
* List of applications
* List of games
* Components

Versions

* Rhapsody (Developer Release)
* Hera (Server 1.0)
* Kodiak (Public Beta)
* Cheetah (10.0)
* Puma (10.1)
* Jaguar (10.2)
* Panther (10.3)
* Tiger (10.4)
* Leopard (10.5)
* Snow Leopard (10.6)
* Lion (10.7)
* Mountain Lion (10.8)
* Mavericks (10.9)
* Yosemite (10.10)
* El Capitan (10.11)
* Sierra (10.12)
* High Sierra (10.13)
* Mojave (10.14)
* Catalina (10.15)

Applications

* App Store
* Automator
* Calculator
* Calendar
* Chess
* Contacts
* Dashboard
* Dictionary
* DVD Player
* FaceTime
* Finder
* Game Center
* Grapher
* iTunes (history)
* Launchpad
* Mail
* Messages
* Music
* Notes
* Notification Center
* Photo Booth
* Podcasts
* Photos
* Preview
* Reminders
* Safari (version history)
* Stickies
* TextEdit
* Time Machine

Utilities

* Activity Monitor
* AirPort Utility
* Archive Utility
* Audio MIDI Setup
* Bluetooth File Exchange
* ColorSync
* Console
* Crash Reporter
* DigitalColor Meter
* Directory Utility
* DiskImageMounter
* Disk Utility
* Font Book
* Grab
* Help Viewer
* Image Capture
* Installer
* Keychain Access
* Migration Assistant
* Network Utility
* ODBC Administrator
* Remote Install Mac OS X
* Screen Sharing
* System Preferences
* System Information
* Terminal
* Universal Access
* VoiceOver

Related

* Classic Mac OS
* Copland
* NeXTSTEP
* Rhapsody
* Darwin

* v
* t
* e

macOS Sierra (version 10.12)[3] is the thirteenth major release of macOS (previously Mac OS X from 2001 to 2012 and OS X from 2012 to 2016), Apple Inc.'s desktop and server operating system for Macintosh. It was the first version of the operating system issued under the June 2016 rebranding as macOS. Sierra is named after the Sierra Nevada mountain range in California and Nevada.[4] Its major new features concern Continuity, iCloud, and windowing, as well as support for Apple Pay and Siri.

The first beta of macOS Sierra was released to developers shortly following the 2016 WWDC keynote on June 13, 2016. The first public-beta release followed on July 7, 2016. It was released to end users on September 20, 2016, as a free upgrade through the Mac App Store[5] and it was succeeded by macOS High Sierra on September 25, 2017.

## Contents

* 1 System requirements
* 2 Changes
* 2.1 System features
* 2.1.1 Siri
* 2.1.2 iCloud Drive and Optimized Storage
* 2.1.3 Auto Unlock and Universal Clipboard
* 2.1.4 Tabs and Picture-in-Picture
* 2.1.5 Apple File System
* 2.1.6 Night Shift
* 2.2 Application features
* 2.2.1 Photos
* 2.2.2 Safari and Apple Pay
* 2.2.3 Messages
* 2.2.4 iTunes
* 2.2.5 Notes
* 2.2.6 Other changes
* 2.3 Security improvements
* 2.3.1 Gatekeeper
* 2.3.2 Directory permissions and sudo
* 2.4 Removed functionality
* 2.5 Reinstallation
* 3 Reception
* 4 Release history
* 5 References
* 6 External links

## System requirements

macOS Sierra requires at least 2 GB of RAM and 8 GB of storage space and will run on:[6]

* iMac: Late 2009 or newer
* MacBook and MacBook 12-inch: Late 2009 or newer
* MacBook Pro: Mid 2010 or newer
* MacBook Air: Late 2010 or newer
* Mac Mini: Mid 2010 or newer
* Mac Pro: Mid 2010 or newer
* Xserve is no longer compatible.

Sierra is the first version of macOS since OS X Mountain Lion, released in 2012, that does not run on all computers that the previous version supported.[7] Developers have created workarounds to install macOS Sierra on some Mac computers that are no longer officially supported as long as they are packed with a CPU that supports SSE4.1.[8]

## Changes

The default desktop picture is an image of Lone Pine Peak.

### System features

#### Siri

A demonstration of Siri on macOS Sierra Beta.

The user can access the Siri intelligent assistant via the Dock, the menu bar or a keyboard shortcut and results are shown in a window in the upper-right corner.[9] Siri can send messages, search the web, find files and adjust settings. Results can be dropped into other applications or pinned to Notification Center.[9] For instance, pictures from search results can be dragged into a document.

#### iCloud Drive and Optimized Storage

This image shows what the Optimized Storage suggestions are.

iCloud Drive can upload the user's documents and desktop directories and sync them to other devices. The System Information application has a new section that gives the user detailed information about space usage per application or file and provides tools and suggestions for freeing up space. For instance, the user can let the system upload old files to iCloud Drive and remove their local copies, keeping them available on-demand in Finder. It can also remove old files from trash automatically. iTunes can delete watched, purchased films and TV programs from its library.[10][11]

#### Auto Unlock and Universal Clipboard

Building upon Continuity, an "umbrella term [for] features that facilitate the communication between [Apple devices]" using Bluetooth and Wi-Fi, Sierra adds two features.[10] With Auto Unlock, the user can unlock their user account by holding a paired Apple Watch close to the device. Time of flight is used to prevent relay attacks. Auto Unlock requires a Mac that was introduced in 2013 or later. With Universal Clipboard, the user can share the clipboard for cut, copy and paste between macOS Sierra and iOS 10 devices, including text and rich content, such as pictures or videos.

#### Tabs and Picture-in-Picture

Applications that support multiple windows can support multiple tabs within a single window, allowing the user to keep windows organized similarly to Safari.[12] With Picture-in-Picture, videos can be played in a window that follows the user across the system.[13]

#### Apple File System

Apple released a preview of a new file system in Sierra, called Apple File System (APFS), to overcome the limitations of HFS Plus. It is intended for solid-state drives and flash memory and will adopt several features found in modern file systems, such as snapshots and cloning, as well as native support for features that Apple already provides in HFS Plus through supplementary software, such as file-system encryption and TRIM support. The file system was released in macOS High Sierra.[14]

#### Night Shift

Night Shift is new in macOS 10.12.4, with the same functionality as its iOS counterpart. Night Shift reduces blue light at night to aid sleep. This can be scheduled in the System Preferences app (in the Displays menu) and can be toggled on or off in the Notification Center or using Siri.[15]

Since this feature relies on the Metal framework,[citation needed] Night Shift is not available on all systems that support macOS Sierra.[16]

### Application features

#### Photos

Apple says it has improved the face recognition of the Photos application, adding object and scene recognition. It groups similar pictures together using faces, locations and object recognition to create "memories". Memories contain picture slideshows with transitions and music selected by the algorithm, which can be modified to the user's liking. The "People" album organizes photos by the people in them, and Places shows all photos on a world map.

#### Safari and Apple Pay

Safari provides an "extension point" which enables developers to bundle Safari extensions within their Cocoa applications and communicate with them directly from the applications.[17] Safari conceals the presence of installed "legacy" plug-ins, such as Adobe Flash Player, Java applets, Microsoft Silverlight, and QuickTime – from websites and requires the user to enable a specific plug-in on a per-use or per-website basis.[10]

Apple Pay allows vendors to embed an Apple Pay button on their websites. In Safari, users can click the Apple Pay button to check out, then complete a purchase using an iPhone or Apple Watch. Apple Pay requires a Mac that supports Continuity (2012 or later models) and either an iPhone 6 or later with iOS 10, or an Apple Watch with watchOS 3.

#### Messages

The Messages app adds aesthetic effects to messages, such as three times bigger emojis and click back with hearts or thumbs-up on a message bubble.[18] The ability to play YouTube videos and preview links in a conversation was introduced.[19] Users can view interactive content added to iMessage in iOS 10. The app also allows you to turn on or off read receipts on a conversation by conversation basis.[20][21]

#### iTunes

Apple Music within iTunes has been redesigned, making it simpler to find favorite songs and discover new ones. A new "For You" tab has been added, which suggests new music the user might like (similar to the existing Genius).[citation needed] A refined MiniPlayer with the ability to view lyrics while listening has also been introduced.[22]

#### Notes

The Notes app allows the user to share and collaborate on notes. This is done by clicking on a share button at the top of the window.[22]

#### Other changes

* Disk Utility regains the ability to format and manage RAID sets, after it was removed in El Capitan.[10][23]
* Finder has an option to show folders always at the top of the view hierarchy, for instance in list views.[10]
* Mail adds a control to the top of email lists to quickly filter them, for instance, by read status or the presence of attachments.[10]

### Security improvements

#### Gatekeeper

macOS Sierra slightly changes the Gatekeeper user interface and adds two new mechanisms. A new default in System Preferences hides the "Anywhere" option which allows the user to disable the mechanism and execute programs from any source without needing to approve each new one individually.

The first new mechanism allows developers to code-sign disk images that can be verified as a unit by the system. This allows developers to guarantee the integrity of external files that are distributed alongside the application bundle on the same disk image. An attacker could infect these external files with malicious code and with them exploit a vulnerability in the application, without having to break the signature of the application bundle itself. By signing the disk image, the developer can prevent tampering and force an attacker to repackage the files onto a new disk image, requiring a valid developer certificate to pass Gatekeeper without a warning.[24]

The second new mechanism is "path randomization", which executes application bundles from a random, hidden path and prevents them from accessing external files relative to their location. To avoid this, the developer has to distribute the application bundle and its external files on a signed disk image or in a signed installer package. The user can avoid this mechanism by moving the application bundle without its external files to a new location.[24]

#### Directory permissions and sudo

The Unix permissions for writing to the /Volumes directory are now restricted to root and no longer "world-writable".[25] Apple expanded System Integrity Protection to `/Library/Application Support/com.apple.TCC`,[26] a directory that contains a list of applications that are allowed to "control the computer", and restricts write access to programs which were signed with an Apple "private entitlement". The file-hosting service Dropbox has been criticized for manipulating the directory to add their Dropbox application to the list, rather than asking the user to do it for them explicitly in System Preferences.[27]

The sudo command-line utility with which a user can execute a command as another user, typically as root, is configured with the "tty_tickets" flag by default, restricting the session timeout to the terminal session (such as a window or tab) in which the user authenticated the program.[28]

### Removed functionality

Sierra removes support for garbage collection from the Objective-C runtime,[29] a memory-management system that was added in Mac OS X Leopard (version 10.5) and declared deprecated in favor of Automatic Reference Counting in OS X Mountain Lion (version 10.8). [30][31] Applications that have been compiled with garbage collection will no longer run.

Apple removed native support for the VPN protocol PPTP and made recommendations for alternatives that it considers more secure.[32]

The "time remaining" estimate has been removed in the 10.12.2 update after complaints of the battery life of 2016 MacBook Pros.[33][34][35]

The Game Center app has been removed.[22] However, the service still exists.

### Reinstallation

Following the download of macOS Sierra (10.12) from the Mac App Store, the installer does not show under a users' "Purchased" tab in the Mac App Store app. Users can still re-download the Sierra installer by visiting the macOS Sierra page on the Mac App Store.[36]

## Reception

macOS Sierra has received generally positive reviews. Users and critics have praised its functionality, including the addition of Siri and support for Apple Pay in Safari.[37] Macworld gave it 4.5 stars out of 5.[38] Engadget gave it a rating of 87 out of 100 praising the new features such as Siri integration, Universal Clipboard, and Apple Pay while criticizing the unreliability of Auto Unlock, that "Siri isn't always smart enough" and some of the Messages features are only available on iOS 10.[39] Developers of apps that rely on the PDFKit library built into macOS have complained that radical changes to PDFKit introduced in Sierra are causing instability and potential data corruption.[40]

## Release history

| Previous release  |  | Current release  |  | Beta

|
|
|
|
|

Version  | Build | Release date  | Darwin | Notes  | Standalone download

|
|
|
|
|

10.12  | 16A323  | September 20, 2016  | 16.0.0  | Original Mac App Store release  | N/A
10.12.1  | 16B2555  | October 24, 2016  | 16.1.0  | About the macOS Sierra 10.12.1 Update | macOS Sierra 10.12.1 Update
16B2657  | October 27, 2016
10.12.2  | 16C67  | December 13, 2016  | 16.3.0  | About the macOS Sierra 10.12.2 Update | macOS Sierra 10.12.2 Update
macOS Sierra 10.12.2 Combo Update
16C68  | December 14, 2016
10.12.3  | 16D32  | January 23, 2017  | 16.4.0  | About the macOS Sierra 10.12.3 Update | macOS Sierra 10.12.3 Update
macOS Sierra 10.12.3 Combo Update
10.12.4  | 16E195  | March 27, 2017  | 16.5.0  | About the macOS Sierra 10.12.4 Update | macOS Sierra 10.12.4 Update
macOS Sierra 10.12.4 Combo Update
10.12.5  | 16F73  | May 15, 2017  | 16.6.0  | About the macOS Sierra 10.12.5 Update | macOS Sierra 10.12.5 Update
macOS Sierra 10.12.5 Combo Update
16F2073  | June 5, 2017
10.12.6  | 16G29  | July 19, 2017  | 16.7.0  | About the macOS Sierra 10.12.6 Update | macOS Sierra 10.12.6 Update
macOS Sierra 10.12.6 Combo Update
16G1036  | October 31, 2017  | About the security content of Security Update 2017-001 Sierra | Security Update 2017-001 Sierra
16G1114  | December 6, 2017  | About the security content of Security Update 2017-002 Sierra | Security Update 2017-002 Sierra
16G1212  | January 23, 2018  | About the security content of Security Update 2018-001 Sierra | Security Update 2018-001 Sierra
16G1314  | March 29, 2018  | About the security content of Security Update 2018-002 Sierra | Security Update 2018-002 Sierra
16G1408  | June 1, 2018  | About the security content of Security Update 2018-003 Sierra | Security Update 2018-003 Sierra
16G1510  | July 9, 2018  | About the security content of Security Update 2018-004 Sierra | Security Update 2018-004 Sierra
16G1618  | October 30, 2018  | About the security content of Security Update 2018-005 Sierra | Security Update 2018-005 Sierra
16G1710  | December 5, 2018  | About the security content of Security Update 2018-006 Sierra | Security Update 2018-006 Sierra
16G1815  | January 22, 2019  | About the security content of Security Update 2019-001 Sierra | Security Update 2019-001 Sierra
16G1917  | March 25, 2019  | About the security content of Security Update 2019-002 Sierra | Security Update 2019-002 Sierra
16G1918  | March 29, 2019  | About the security content of Security Update 2019-002 Sierra | Security Update 2019-002 Sierra
16G2016  | May 14, 2019  | About the security content of Security Update 2019-003 Sierra | Security Update 2019-003 Sierra
~~16G2127~~ | July 22, 2019  | About the security content of Security Update 2019-004 Sierra | ~~Security Update 2019-004 Sierra~~
16G2128  | July 29, 2019  | About the security content of Security Update 2019-004 Sierra | ~~Security Update 2019-004 Sierra~~
16G2136  | September 26, 2019  | About the security content of Security Update 2019-005 Sierra | Security Update 2019-005 Sierra

## References

1. ↑ "macOS version 10.12 Sierra on Intel-based Mac computers". The Open Group. Archived from the original on October 2, 2016. https://web.archive.org/web/20161002105135/http://www.opengroup.org/openbrand/register/brand3627.htm. Retrieved September 29, 2016.
2. ↑ "About the security content of macOS Mojave 10.14.6 Supplemental Update 2, Security Update 2019-005 High Sierra, and Security Update 2019-005 Sierra". September 26, 2019. https://support.apple.com/en-us/HT210589.
3. ↑ "Download - Apple Developer". https://developer.apple.com/download/. Retrieved 16 June 2016.
4. ↑ Loyola, Roman (7 July 2016). "macOS Sierra FAQ: What you need to know about the new Mac operating system". Archived from the original on 15 July 2016. https://web.archive.org/web/20160715155623/http://www.macworld.com/article/3083346/os-x/macos-sierra-faq-what-you-need-to-know-about-the-new-mac-operating-system.html.
5. ↑ Majo, Benjamin (7 September 2016). "macOS Sierra will be released on September 20 for free to Mac owners". Archived from the original on 8 September 2016. https://web.archive.org/web/20160908200817/https://9to5mac.com/2016/09/07/wip-macos-sierra-will-be-released-on-september-20/.
6. ↑ "How to get macOS Sierra". https://support.apple.com/ht201475.
7. ↑ Elliott, Matt (2016-06-13). "See which Macs will -- and won't -- work with MacOS". CNet. Archived from the original on 16 June 2016. https://web.archive.org/web/20160616095526/http://www.cnet.com/how-to/see-which-macs-will-and-wont-work-with-macos/. Retrieved 16 June 2016.
8. ↑ "MacOS 10.12 Sierra Unsupported Macs Thread". Archived from the original on 2016-06-16. https://web.archive.org/web/20160616134930/http://forums.macrumors.com/threads/macos-10-12-sierra-unsupported-macs-thread.1977128/.
9. ↑ 9.0 9.1 "How to use Siri in macOS Sierra" (in en). Macworld. Archived from the original on 2017-02-04. https://web.archive.org/web/20170204005925/http://www.macworld.com/article/3088224/macs/how-to-use-siri-on-macos-sierra.html.
10. ↑ 10.0 10.1 10.2 10.3 10.4 10.5 Cunningham, Andrew; Hutchinson, Lee (September 20, 2016). "macOS 10.12 Sierra: The Ars Technica review". Archived from the original on September 25, 2016. https://web.archive.org/web/20160925224854/http://arstechnica.co.uk/apple/2016/09/macos-10-12-sierra-review-os-x/.
11. ↑ Clover, Juli. "macOS Sierra: Save Disk Space With the New 'Optimize Storage' Option". Archived from the original on 2016-11-26. https://web.archive.org/web/20161126064701/http://www.macrumors.com/2016/09/20/macos-sierra-optimize-storage/.
12. ↑ "macOS Sierra: Apps Gain Safari-Style Tabs" (in en). Archived from the original on 2018-01-26. https://web.archive.org/web/20180126070823/https://www.macrumors.com/2016/09/20/macos-sierra-tabbed-windows/.
13. ↑ "macOS Sierra: Picture in Picture Mode for Safari and iTunes Videos" (in en). Archived from the original on 2018-01-26. https://web.archive.org/web/20180126070739/https://www.macrumors.com/2016/09/20/macos-sierra-picture-in-picture-safari-itunes/.
14. ↑ "macOS High Sierra: You’ll Hardly Notice You’ve Upgraded - The Mac Observer". The Mac Observer. 4 October 2017. Archived from the original on 11 May 2018. https://web.archive.org/web/20180511013037/https://www.macobserver.com/news/macos-high-sierra-youll-hardly-notice-youve-upgraded/. Retrieved 10 May 2018.
15. ↑ Clover, Juli. "Apple Releases macOS Sierra 10.12.4 With New Night Shift Mode". Archived from the original on 2017-04-01. https://web.archive.org/web/20170401060730/https://www.macrumors.com/2017/03/27/apple-releases-macos-sierra-10-12-4/.
16. ↑ "How to Use Night Shift in macOS Sierra 10.12.4" (in en). https://www.macrumors.com/how-to/night-shift-macos-sierra-10-12-4/.
17. ↑ "Safari App Extension Programming Guide: Safari App Extensions". https://developer.apple.com/library/prerelease/content/documentation/NetworkingInternetWeb/Conceptual/SafariAppExtension_PG/index.html#//apple_ref/doc/uid/TP40017319.
18. ↑ "How to use Messages effects in macOS Sierra". iMore. Archived from the original on 2016-11-23. https://web.archive.org/web/20161123053103/http://www.imore.com/how-use-messages-effects-macos-sierra.
19. ↑ "10 tiny macOS Sierra features I love". iMore. Archived from the original on 2016-12-30. https://web.archive.org/web/20161230160452/http://www.imore.com/10-tiny-features-i-love-about-macos-sierra.
20. ↑ "7 hidden features in macOS Sierra you may have missed". Macworld. Archived from the original on 2016-12-30. https://web.archive.org/web/20161230230646/http://www.macworld.com/article/3122961/macs/7-hidden-features-in-macos-sierra-you-may-have-missed.html.
21. ↑ "How to Use Read Receipts on the iPhone and Mac" (in en-US). TekRevue. Archived from the original on 2016-12-30. https://web.archive.org/web/20161230160211/https://www.tekrevue.com/tip/imessage-read-receipts-iphone-mac/.
22. ↑ 22.0 22.1 22.2 Matt Elliott (November 10, 2016). "10 hidden MacOS Sierra features you need to know". Archived from the original on 2017-02-18. https://web.archive.org/web/20170218064552/https://www.cnet.com/how-to/10-hidden-macos-sierra-features-you-need-to-know/. Retrieved 2018-06-09.
23. ↑ "How to configure a software RAID in macOS Sierra’s Disk Utility". Macworld. Archived from the original on 2017-01-08. https://web.archive.org/web/20170108093537/http://www.macworld.com/article/3095835/storage/how-to-configure-a-software-raid-in-macos-sierra-s-disk-utility.html.
24. ↑ 24.0 24.1 Cunningham, Andrew (June 15, 2016). "Some nerdy changes in macOS and iOS 10: RAW shooting, a harsher Gatekeeper, more". http://arstechnica.co.uk/apple/2016/06/ios-10-macos-sierra-changes-raw-shooting-gatekeeper/.
25. ↑ Trouton, Rich (September 21, 2016). "macOS Sierra's /Volumes folder is no longer world-writable". Archived from the original on October 8, 2016. https://web.archive.org/web/20161008083553/https://derflounder.wordpress.com/2016/09/21/macos-sierras-volumes-folder-is-no-longer-world-writable/.
26. ↑ Gruber, John (September 20, 2016). "Dropbox's MacOS Security Hack". Archived from the original on October 1, 2016. https://web.archive.org/web/20161001190246/http://daringfireball.net/linked/2016/09/20/dropbox-macos-security.
27. ↑ Pauli, Darren (September 13, 2016). "Dropbox apologies for clunky administrator account access on Macs". Archived from the original on October 2, 2016. https://web.archive.org/web/20161002054319/http://www.theregister.co.uk/2016/09/13/dropbox_mac_security/.
28. ↑ Trouton, Rich (September 21, 2016). "tty_tickets option now on by default for macOS Sierra's sudo tool". Archived from the original on October 8, 2016. https://web.archive.org/web/20161008083811/https://derflounder.wordpress.com/2016/09/21/tty_tickets-option-now-on-by-default-for-macos-sierras-sudo-tool/.
29. ↑ "Xcode Release Notes". May 29, 2018. Section "Xcode 8.3". https://developer.apple.com/library/archive/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html#//apple_ref/doc/uid/TP40001051. "OS X 10.11 was the last major release of macOS that supported the previously deprecated garbage collection runtime. Applications or features that depend upon garbage collection may not function properly or will not launch in macOS Sierra. Developers should use Automatic Reference Counting (ARC) or manual retain/release for memory management instead. (20589595)"
30. ↑ Siracusa, John (October 29, 2007). "Mac OS X 10.5 Leopard: the Ars Technica review". At section "Objective-C 2.0". Archived from the original on November 17, 2016. https://web.archive.org/web/20161117211233/http://arstechnica.com/apple/2007/10/mac-os-x-10-5/11/.
31. ↑ Siracusa, John (July 25, 2012). "OS X 10.8 Mountain Lion: the Ars Technica review". Ars Technica. At section "Objective-C enhancements". Archived from the original on November 17, 2016. https://web.archive.org/web/20161117211236/http://arstechnica.com/apple/2012/07/os-x-10-8/17/#objective-c-enhancements.
32. ↑ "Prepare for removal of PPTP VPN before you upgrade to iOS 10 and macOS Sierra". July 16, 2016. https://support.apple.com/HT206844.
33. ↑ Kahn, Jordan (2016-12-13). "Why Apple is removing ‘time remaining’ battery life estimates following MacBook Pro complaints". Archived from the original on 2017-01-08. https://web.archive.org/web/20170108093712/https://9to5mac.com/2016/12/13/why-apple-is-removing-time-remaining-battery-life-estimates-macbook-pro/.
34. ↑ Schroeder, Stan. "Apple's Sierra update 'fixes' Mac battery woes by removing 'time remaining' estimate". Archived from the original on 2017-01-05. https://web.archive.org/web/20170105052303/http://mashable.com/2016/12/14/macos-sierra-battery-time-remaining-removed/.
35. ↑ O'Kane, Sean (2016-12-13). "Apple removes the ‘time remaining’ battery estimate in new macOS update". Archived from the original on 2017-01-08. https://web.archive.org/web/20170108093929/http://www.theverge.com/2016/12/13/13939278/apple-macos-sierra-new-macbook-pros-battery-life.
36. ↑ "How to download macOS Sierra". Apple. October 17, 2017. https://support.apple.com/en-us/HT208202. Retrieved November 1, 2017.
37. ↑ "MacOS Sierra review: Six big ways it's going to change your Apple experience". Archived from the original on 2017-01-16. https://web.archive.org/web/20170116185614/https://www.cnet.com/products/apple-macos-sierra-review/.
38. ↑ "macOS Sierra review: Mixing iOS with OS X to make a better Mac". Macworld. Archived from the original on 2017-01-16. https://web.archive.org/web/20170116165107/http://www.macworld.com/article/3120857/macs/macos-sierra-review.html.
39. ↑ Wollman, Dana (September 20, 2016). "macOS Sierra review: Mac users get a modest update this year". https://www.engadget.com/2016/09/20/macos-sierra-review/.
40. ↑ "Sierra PDF Problems Get Worse in 10.12.2". Archived from the original on 2017-03-20. https://web.archive.org/web/20170320233049/https://tidbits.com/article/16966.

## External links

Preceded by
OS X 10.11 (El Capitan) |  macOS 10.12 (Sierra)
09/2016  | Succeeded by
macOS 10.13 (High Sierra)

|
|

* v
* t
* e

macOS

* History
* Architecture
* Components
* Server
* Software

Versions|

* Server 1.0 Hera
* Public Beta Kodiak
* 10.0 Cheetah
* 10.1 Puma
* 10.2 Jaguar
* 10.3 Panther
* 10.4 Tiger
* 10.5 Leopard
* 10.6 Snow Leopard
* 10.7 Lion
* 10.8 Mountain Lion
* 10.9 Mavericks
* 10.10 Yosemite
* 10.11 El Capitan
* 10.12 Sierra
* 10.13 High Sierra
* 10.14 Mojave
* 10.15 Catalina

Applications|

* App Store
* Automator
* Calculator
* Calendar
* Chess
* Contacts
* Dictionary
* DVD Player
* FaceTime
* Finder
* Game Center
* Grapher
* Home
* iTunes (history)
* Launchpad
* Mail
* Messages
* News
* Music
* Notes
* Notification Center
* Podcasts
* Photo Booth
* Photos
* Preview
* QuickTime
* Reminders
* Safari (version history)
* Stickies
* TextEdit
* Time Machine

Discontinued|

* Dashboard
* Front Row
* iChat
* iPhoto
* iSync
* Sherlock

Utilities|

* Activity Monitor
* AirPort Utility
* AppleScript Editor
* Archive Utility
* Audio MIDI Setup
* Bluetooth File Exchange
* Boot Camp
* ColorSync
* Configurator
* Console
* Crash Reporter
* DigitalColor Meter
* Directory Utility
* DiskImageMounter
* Disk Utility
* Font Book
* Grab
* Help Viewer
* Image Capture
* Installer
* Keychain Access
* Migration Assistant
* Network Utility
* ODBC Administrator
* Screen Sharing
* System Preferences
* System Information
* Terminal
* Universal Access
* VoiceOver

Discontinued|

* Software Update
* Remote Install Mac OS X

Technology and user interface|

* AirDrop
* Apple File System
* Apple menu
* Apple Push Notification service
* AppleScript
* Aqua
* Audio Units
* AVFoundation
* Bonjour
* Bundle
* CloudKit
* Cocoa
* ColorSync
* Command key
* Core Animation
* Core Audio
* Core Data
* Core Foundation
* Core Image
* Core OpenGL
* Core Text
* Core Video
* CUPS
* Cover Flow
* Darwin
* Dock
* FileVault
* Fonts
* Gatekeeper
* Grand Central Dispatch
* icns
* iCloud
* I/O Kit
* Kernel panic
* Keychain
* launchd
* Mach-O
* Menu extra
* Metal
* Mission Control
* OpenCL
* Option key
* Preference Pane
* Property list
* Quartz
* Quick Look
* Smart Folders
* Speakable items
* Spotlight
* Stacks
* System Integrity Protection
* Uniform Type Identifier
* Universal binary
* WebKit
* XNU
* XQuartz

Deprecated|

* HFS+

Discontinued|

* BootX
* Brushed metal
* Carbon
* Classic Environment
* Inkwell
* QTKit
* Rosetta
* Spaces
* Xgrid

* v
* t
* e

Operating systems by Apple

Apple II, III, Lisa|

* Apple II series
* Apple DOS
* ProDOS
* GS/OS
* Apple III
* SOS
* Lisa
* Lisa OS
* MacWorks

Macintosh|

| Classic Mac OS|

* System 1
* System 2, 3, 4
* System 5
* System 6
* System 7
* Mac OS 8
* Mac OS 9

|

Mac OS X,
OS X, macOS|

* History
* NeXTSTEP
* OpenStep
* Rhapsody
* Public Beta
* Core
* Darwin
* XNU
* Desktop
* Mac OS X 10.0
* 10.1
* 10.2
* 10.3
* 10.4
* 10.5
* 10.6
* 10.7
* OS X 10.8
* 10.9
* 10.10
* 10.11
* macOS 10.12
* 10.13
* 10.14
* 10.15
* Server
* 1.0
* macOS Server

Other projects|

* Shipped
* A/ROSE
* A/UX
* AIX for Apple Network Servers
* MAE
* MkLinux
* PowerOpen Environment
* Cancelled
* Star Trek
* Taligent
* Copland
* Nukernel

iPod, iPhone, Engineering:IPad|

* iPod software
* iPhone OS
* 1
* 2
* 3
* iOS
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11
* 12
* 13
* iPadOS

Other devices|

* Newton
* Newton OS
* Apple Watch
* watchOS
* Apple TV
* Apple TV Software
* tvOS
* HomePod
* audioOS

Italics denote discontinued products ·  List ·  Category

* v
* t
* e

Apple Inc.

* History
* Outline

Products|

| Hardware|

* iPhone
* Apple TV
* Apple Watch
* AirPods
* Pro
* Beats by Dre
* Beats Pill
* HomePod
* Silicon Chips

Mac|

* Mac
* iMac
* iMac Pro
* MacBook family
* Mac Mini
* Mac Pro

iPod|

* iPod
* Classic
* Nano
* Shuffle
* Touch

iPad|

* iPad
* Mini
* Air
* Pro
* Accessories

Software|

* Classic Mac OS
* ClarisWorks/AppleWorks
* HyperCard
* Darwin
* macOS
* History
* Server
* Software
* iOS
* History
* watchOS
* tvOS
* audioOS
* iPadOS
* CarPlay
* HomeKit
* Core Foundation
* Developer Tools
* FileMaker Pro
* Bento
* Final Cut Pro X
* Compressor
* Motion
* Logic Pro
* MainStage
* iLife
* GarageBand
* iMovie
* iTunes
* QuickTime
* Shazam
* Siri
* Education
* At Ease
* Classroom
* Schoolwork

Services|

* Apple ID
* Developer
* App Store Connect
* iAd
* TestFlight
* WWDC
* FaceTime
* Game Center
* iCloud
* iTunes Match
* MobileMe
* Photos
* iMessage
* iWork
* Keynote
* Numbers
* Pages
* Maps
* Look Around

Financial|

* Apple Card
* Apple Pay
* Cash
* Apple Wallet

Media|

* Arcade
* Music
* Beats 1
* Connect
* Beats Music
* iTunes Festival/Apple Music Festival
* iTunes Radio
* News
* +
* Newsstand
* Podcasts
* TV
* +
* List of programs
* Channels

Stores|

* App stores
* iOS
* iMessage
* iPadOS
* watchOS
* macOS
* tvOS
* Apple Store
* iBooks Store
* iTunes Store
* iTunes Connect
* iTunes U

Support|

* AppleCare
* Apple Specialist
* Certifications
* Genius Bar
* JointVenture
* ProCare
* One to One

Companies|

| Subsidiaries|

* Anobit
* Apple Energy
* Apple IMC
* Apple Sales International
* Apple Services
* Apple Worldwide Video
* Beats Electronics
* Beddit
* Braeburn Capital
* Claris

|

Acquisitions|

* List
* Anobit
* AuthenTec Inc.
* Beats Electronics
* Beddit
* Cue
* Emagic
* FingerWorks
* Intrinsity
* InVisage Technologies
* Lala
* NeXT
* Nothing Real
* Metaio
* P.A. Semi
* PrimeSense
* Shazam
* Siri
* Spotsetter
* Texture
* Topsy
* EditGrid

Partnerships|

* AIM alliance
* Kaleida Labs
* Taligent
* Akamai
* Arm Holdings
* DiDi
* Digital Ocean
* iFund
* Imagination
* Rockstar Consortium

Related|

* Advertising
* 1984
* Think different
* Get a Mac
* iPods
* Product Red
* Campus
* Park
* University
* Design
* IDg
* Typography
* Book
* History
* Codenames
* Community
* Evangelist
* Fellow
* Master
* Criticism
* Litigation
* FBI–Apple encryption dispute
* iOS app approvals
* Artistic depictions of Steve Jobs

People|

| Executives|

| Current|

* Tim Cook (CEO)
* Jony Ive (CDO)
* Jeff Williams (COO)
* Luca Maestri (CFO)
* Katherine Adams (General Counsel)
* Eddy Cue
* Craig Federighi
* Isabel Ge Mahe
* John Giannandrea
* Lisa Jackson
* Sabih Khan
* Tor Myhren
* Deirdre O'Brien
* Adrian Perica
* Dan Riccio
* Phil Schiller
* Johny Srouji

|

Former|

* Michael Scott (CEO)
* Mike Markkula (CEO)
* John Sculley (CEO)
* Michael Spindler (CEO)
* Gil Amelio (CEO)
* Steve Jobs (CEO)
* Angela Ahrendts
* Fred D. Anderson
* John Browett
* Guerrino De Luca
* Paul Deneve
* Al Eisenstat
* Tony Fadell
* Scott Forstall
* Ellen Hancock
* Nancy R. Heinen
* Ron Johnson
* David Nagel
* Peter Oppenheimer
* Mark Papermaster
* Jon Rubinstein
* Bertrand Serlet
* Bruce Sewell
* Sina Tamaddon
* Avie Tevanian
* Ronald Wayne
* Steve Wozniak

Board of
directors|

| Current|

* Arthur D. Levinson (Chairman)
* Tim Cook (CEO)
* James A. Bell
* Albert Gore Jr.
* Andrea Jung
* Ronald D. Sugar
* Susan L. Wagner

|

Former|

* Mike Markkula (Chairman)
* John Sculley (Chairman)
* Steve Jobs (Chairman)
* Gil Amelio
* Fred D. Anderson
* Bill Campbell
* Mickey Drexler
* Al Eisenstat
* Larry Ellison
* Robert A. Iger
* Delano Lewis
* Arthur Rock
* Eric Schmidt
* Michael Scott
* Michael Spindler
* Edgar S. Woolard Jr.
* Jerry York

Founders|

* Steve Jobs
* Steve Wozniak
* Ronald Wayne

* Italics indicate discontinued products, services, or defunct companies.

*   * Category

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Original source: https://en.wikipedia.org/wiki/MacOS Sierra. Read more

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