macOS Big Sur

From Wikipedia, the free encyclopedia

macOS Big Sur
A version of the macOS operating system
macOS Big Sur wordmark
MacOS Big Sur Desktop.png
macOS Big Sur's desktop in "light appearance"
DeveloperApple Inc.
OS family
  • Macintosh
  • Unix, based on Darwin (BSD)
Source modelClosed, with open source components
General
availability		November 12, 2020; 14 months ago (2020-11-12)[1]
Latest release11.6.2 (20G314)[2] (December 13, 2021; 42 days ago (2021-12-13))
Update methodSoftware Update
Platformsx86-64, ARM64[3]
Kernel typeHybrid (XNU)
LicenseProprietary software with open-source components
Preceded bymacOS Catalina
Succeeded bymacOS Monterey
Official websitewww.apple.com/macos/big-sur at the Wayback Machine (archived 2021-10-18)
Support status
Supported
Part of a series on
macOS
Features
Versions
Applications
Utilities
Related
  • v
  • t

macOS Big Sur (version 11) is the seventeenth major release of macOS, Apple Inc.'s operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020,[4] and was released to the public on November 12, 2020.[5][4][6]

Big Sur is the successor to macOS Catalina, and was succeeded by macOS Monterey, which was released on October 25, 2021.

Most notably, macOS Big Sur features a user interface redesign that features new blurs to establish a visual hierarchy and also includes a revamp of the Time Machine backup mechanism, among other changes. It is also the first macOS version to support Macs with ARM-based processors. To mark the transition, the operating system's major version number was incremented, for the first time since 2000, from 10 to 11.[7][8] The operating system is named after the coastal region of Big Sur in the Central Coast of California.

Development history[]

Providing some indication as to how the pre-release operating system may have been viewed internally at Apple during its development cycle, documentation accompanying the initial beta release of macOS Big Sur referred to its version as "10.16", and when upgrading from prior versions of macOS using the Software Update mechanism to early beta releases, the version referred to was "10.16".[9] An exception to this was the Developer Transition Kit, which always reported the system version as "11.0".[9] macOS Big Sur started reporting the system version as "11.0" on all Macs as of the third beta release.

To maintain backwards compatibility, macOS Big Sur identified itself as 10.16 to software and in the browser user agent.[10]

System requirements[]

Unlike macOS Catalina, which supported every standard configuration Mac that Mojave supported, Big Sur drops support for various Macs released in 2012 and 2013. Big Sur runs on the following Macs:[11]

  • MacBook: Early 2015 and newer
  • MacBook Air: Mid 2013 and newer
  • MacBook Pro: Late 2013 and newer
  • Mac Mini: Late 2014 and newer
  • iMac: Mid 2014 and newer
  • iMac Pro: Late 2017
  • Mac Pro: Late 2013 and newer
  • Developer Transition Kit (only up to Big Sur 11.3 beta 2[12])

Changes[]

Design[]

macOS Big Sur refreshes the design of the user interface, described by Apple as the biggest change since the introduction of Mac OS X.[5] Its changes include translucency in various places, a new abstract wallpaper for the first time and a new color palette. All standard apps, as well as the Dock and the Menu Bar, are redesigned and streamlined, and their icons now have rounded-square shapes like iOS and iPadOS apps.[13] Compared to iOS, Big Sur's icons include more shading and highlights to give a three-dimensional appearance. Its aesthetic has been described as "neumorphism", a portmanteau of new and skeuomorphism.[14][15] System sounds are redone as well.

The new OS also brings further integration with Apple's SF Symbols, enabling easier use by third-party developers as UI elements for their applications through AppKit, , and Catalyst, which makes it possible to unify third party applications with the existing Apple-made design language.[16]

Interface[]

Control Center[]

An interface with quick toggles for Wi-Fi, Bluetooth, screen brightness and system volume has been added to the menu bar.[13] This interface is functionally and visually similar to Control Center on iOS and iPadOS.

Notification Center[]

The Notification Center is redesigned, featuring interactive notifications and a transparent user interface. Notification Center also features a new widget system similar to that in iOS 14, displaying more information with more customization than previously available.[5]

System[]

Support for Apple silicon[]

macOS Big Sur is the first release of macOS for Macs powered by Apple-designed ARM64-based processors, a key part of the transition from Intel x86-64-based processors.[17] The chip mentioned in demo videos, and used in the Developer Transition Kit, is the A12Z Bionic. On November 10, 2020, Apple announced the first Mac Apple silicon chip, the Apple M1, in the Late 2020 Mac Mini, MacBook Air, and MacBook Pro.[18] Apple has said that it will support Intel Macs "for years to come",[17][19] and most software that has not been ported to run on ARM Macs can use Rosetta 2, an update of a compatibility mechanism originally developed for the PowerPC-to-Intel x86 transition. Likewise, Apple also introduced an updated universal binary format, Universal 2, which allows developers to package their applications so that they can run natively on both ARM64 and x86-64 processors.[20]

Support for iOS and iPadOS applications[]

On Macs based on Apple silicon, macOS Big Sur can run iOS and iPadOS applications natively and without any modifications needed from developers, aside from allowing the app to be available on the Mac App Store.[17] The first Macs with this capability are those that use the Apple M1 SoC (system on a chip).

Time Machine[]

Time Machine, the backup mechanism introduced in Mac OS X 10.5 Leopard, has been overhauled to utilize the APFS file system instead of HFS+. Specifically, the new version of Time Machine makes use of APFS's snapshot technology.[21][22][23] According to Apple, this enables "faster, more compact, and more reliable backups" than were possible previously with HFS+-formatted backup destinations.[21][24] An independent evaluation of this claim found that Time Machine on macOS 11 in conjunction with APFS was 2.75-fold faster upon initial local backup and 4-fold faster upon subsequent backups relative to macOS 10.15's Time Machine implementation using HFS+.[24] A more modest yet nevertheless significant advantage was noted as well for backups to network-attached disks.[24]

New local (i.e. USB- or Thunderbolt-connected) and network-connected Time Machine backup destinations are formatted as APFS by default, though Time Machine can continue backing up to existing HFS+ backup volumes.[21] There is no option to convert existing, HFS+-based backups to APFS; instead, users who want to benefit from the advantages of the new, APFS-based implementation of Time Machine need to start with a fresh volume.[24]

In the new version of Time Machine, encryption appears to be required (instead of merely optional) for local disks, but it remains elective for networked volumes.[24]

It is no longer possible to restore the whole system using a Time Machine backup, as the signed system volume is not backed up. Non-core applications and user data can be restored in full using Migration Assistant, preceded by a system reinstall if necessary.

Spotlight[]

Spotlight, the file system indexing-and-search mechanism introduced in Mac OS X 10.4 Tiger, is faster and the interface has been refined. Spotlight is now the default search mechanism in Safari, Pages, and Keynote.[25][26]

Signed system volume[]

The system volume containing the core operating system is cryptographically signed. Apple indicates this is a security measure to prevent malicious tampering.[27] This includes adding an SHA-256 hash for every file on the system volume, preventing changes from third-party entities and the end user.[28]

Software updates[]

Software updates can begin in the background before a restart, thus requiring less downtime to complete. Because system files are cryptographically signed, the update software can rely on them being in precise locations, thus permitting them to be effectively updated in place.[26]

Encryption[]

macOS Big Sur supports encryption at the file level. Earlier versions of macOS (10.15 Catalina and older) supported encryption only at the level of entire volumes.[23] As of June 2020, this capability is known to be compatible with Macs based on Apple silicon; it is unclear whether it is compatible with Intel-based Macs.[23]

Other changes[]

  • Bilingual dictionaries in French–German, Indonesian–English, Japanese–Simplified Chinese and Polish–English
  • Better predictive input for Chinese and Japanese users
  • New fonts for Indian users
  • The "Now Playing" widget has been moved from the Notification Center to the Menu Bar
  • Podcasts "Listen Now" feature
  • FaceTime sign language prominence
  • Network Utility has been deprecated
  • macOS startup sound is enabled by default (it had been disabled by default on some machines in 2016), and an option in System Preferences was added to enable or disable this functionality.[29]

Application features[]

The Safari 14 start page with Wikipedia on the reading list

Safari[]

Big Sur includes Safari 14, released for macOS Catalina and macOS Mojave on September 16, 2020. Safari 14 includes:[30]

  • a new customizable home page with the ability to personalize what features are visible and set a custom wallpaper
  • improved tab design with page previews and favicons
  • built-in web page translation in English, Spanish, German, French, Russian, Chinese and Portuguese. The feature is currently in beta and will not be available in macOS Catalina and Mojave[31]
  • new privacy features such as Privacy Report, which monitors privacy trackers and further increases Safari's security
  • iCloud Keychain password monitoring, which notifies the user of compromised passwords
  • better performance and power efficiency
  • extension privacy management
  • support for WebExtensions API
  • the ability to import passwords from Google's Chrome browser
  • support for 4K HDR content from Netflix on Macs with an Apple T2 chip[32]
  • support for VP9 decoding, allowing for playback of 4K and HDR content from YouTube
  • support for WebP image format

The new version of Safari also officially ends support for Adobe Flash Player, 3 months ahead of its end-of-life and 10 years after Steve Jobs' "Thoughts on Flash".

Messages[]

The Messages app was rewritten to be based upon Apple's Catalyst technology. This enables the app to have feature parity with its iOS counterpart. Alongside a refined design, the new Messages app brings:

  • Conversation pinning for up to nine conversations that sync across iOS, iPadOS, and macOS
  • Message searching
  • Name and photo sharing
  • Group chat photo thumbnails
  • @Mentioning individuals by name
  • Inline message replies
  • Memoji stickers and editor
  • A new photo picker
  • Localized message effects for users in India

App Store[]

The Mac App Store showing the Safari Extensions category

Refinements and new features of the Mac App Store include:

  • A new "nutrition label" section dedicated to the data and information an app collects, also featured in the iOS App Store
  • A new Safari extensions category
  • Third party Notification Center widgets, similar to those in iOS and iPadOS 14
  • The ability to share in-app purchases and subscriptions on the Mac via iCloud Family Sharing

Notes[]

  • Collapsible pinned section
  • Quick text style and formatting options
  • Scanning enhancements

Photos[]

  • New editing capabilities
  • Improved Retouch tool
  • New zooming feature in views

Maps[]

  • "Look Around" interactive street-level 360° panoramas, first implemented in the iOS 13 version of Maps, have been incorporated into the macOS version of Maps.
  • Availability of directions for cyclists.
  • Electric vehicle routing, based on proximity to charging stations and monitoring of battery levels (on selected car models).
  • Guides for exploring new places.

Voice Memos[]

  • a file structure has been implemented to allow organization of recordings in folders[33]
  • recordings can be marked as Favorites for easier subsequent access
  • Smart Folders automatically group Apple Watch recordings, recently deleted recordings, and Favorites
  • audio can be enhanced to reduce background noise and room reverb

Other applications found in macOS 11 Big Sur[]

Removed functionality[]

  • Calculator Notification Center Widget[34]
  • Option to toggle Font Smoothing in System Preferences[35]

Criticism[]

The rollout of Big Sur came with several problems.[36] Upgrading to the initial public release of Big Sur (version 11.0.1) bricked some computers, rendering them unusable. Many of these were 2013 and 2014 MacBook Pros, though problems were also observed on a 2019 MacBook Pro and an iMac from the same year.[37][38][39] The initial rollout also disrupted Apple's app notarization process, causing slowdowns even on devices not running Big Sur.[40] Users also reported that the update was slow or even might fail to install.[41] macOS Catalina and Big Sur apps were taking a long time to load because of Gatekeeper issues.[42]

The ongoing issues with the COVID-19 pandemic meant it was hard for users to visit an Apple Store to get their machines fixed.[43] Shortly afterwards, Apple released a series of steps explaining how these Macs could be recovered.[44]

Certain Apple applications running on early versions of Big Sur were reported to bypass firewalls, raising privacy and security concerns.[45][46] This was addressed with the release of macOS Big Sur 11.2, which removed the whitelist for built-in programs.[47][48] Conversely, security experts have reported that Big Sur will check an application's certificate every time it is run, degrading system performance. There have been reports that the operating system sends a hash back to Apple of every program run and when it was executed.[49] Apple responded that the process is part of efforts to protect users from malware embedded in applications downloaded outside of the Mac App Store.[49]

Some users have reported problems connecting external displays to Macs running Big Sur 11.1 and 11.2.[50]

When upgrading Macs from 10.13, 10.14 and 10.15 to Big Sur the upgrade process could become stuck for seemingly unclear reasons. Only a full system restore from backup would solve this problem. On 21 October 2021 a solution became known that required removal of up to several hundreds of thousands excess temporary files in the system folders.[51]

Vulnerability[]

In 2021, there were reports of two malware codes that infected macOS and include both x86-64 and ARM64 code. The first one was detected in early 2021.[52] The second one, Silver Sparrow, was detected on nearly 30,000 Macs in February 2021.[53][54][55]

Release history[]

The public release of macOS 11 Big Sur began with 11.0.1 for Intel Macs. Version 11.0 was preinstalled on Apple silicon Macs, and Apple advised those with that version to be updated to 11.0.1.[56]

Previous release Current release Beta
Version Build Date Darwin version Release notes Notes
11.0 20A2411 November 17, 2020 20.1.0
xnu-7195.41.8~9 		N/A Preinstalled on MacBook Air (M1, 2020), MacBook Pro (13-inch, M1, 2020), and Mac mini (M1, 2020)
11.0.1 20B29 November 12, 2020 20.1.0
xnu-7195.50.7~2 		Security content Initial public release
20B50 November 19, 2020 Available for all Macs except Late 2013 and Mid 2014 13" MacBook Pros
11.1 20C69 December 14, 2020 20.2.0
xnu-7195.60.75~1 		Release notes

Security content

11.2 20D64 February 1, 2021 20.3.0
xnu-7195.81.3~1 		Release notes

Security content

11.2.1 20D74 February 9, 2021 Security content
20D75 February 15, 2021 Fixes bug where installation with insufficient free space could cause data loss - exclusive to the full installer[57]
11.2.2 20D80 February 25, 2021 N/A
11.2.3 20D91 March 8, 2021 Security content
11.3 20E232 April 26, 2021 20.4.0
xnu-7195.101.1~3 		Release notes

Security content

11.3.1 20E241 May 3, 2021 20.4.0
xnu-7195.101.2~1 		Security content
11.4 20F71 May 24, 2021 20.5.0
xnu-7195.121.3~9 		Release notes

Security content

11.5 20G71 July 21, 2021 20.6.0
xnu-7195.141.2~5
Wed Jun 23 00:26:31 PDT 2021 		Release notes

Security content

11.5.1 20G80 July 26, 2021 Release notes

Security content

11.5.2 20G95 August 11, 2021 Release notes
11.6 20G165 September 13, 2021 20.6.0
xnu-7195.141.6~3
Mon Aug 30 06:12:21 PDT 2021 		Release notes

Security content

11.6.1 20G224 October 25, 2021 20.6.0
xnu-7195.141.8~1
Tue Oct 12 18:33:42 PDT 2021 		Release notes

Security content

11.6.2 20G314 December 13, 2021 20.6.0
xnu-7195.141.14~1
Wed Nov 10 22:23:07 PST 2021 		Release notes

Security content

References[]

  1. ^ Rossignol, Joe (November 10, 2020). "Apple Releasing macOS Big Sur on November 12". MacRumors.
  2. ^ "About the security content of macOS Big Sur 11.6.2". Apple Support. Apple Inc. December 13, 2021. Retrieved December 13, 2021.
  3. ^ Etherington, Darrell (June 22, 2020). "Apple is releasing a Mac mini with an Apple processor for developers starting this week". TechCrunch. Retrieved July 20, 2020.
  4. ^ a b Heater, Brian. "Apple unveils macOS 11.0 Big Sur". TechCrunch. Archived from the original on June 22, 2020. Retrieved June 22, 2020.
  5. ^ a b c "Apple introduces macOS Big Sur with a beautiful new design" (Press release). Apple Inc. June 22, 2020. Archived from the original on June 22, 2020. Retrieved June 22, 2020.
  6. ^ Carman, Ashley (November 10, 2020). "Apple announces macOS Big Sur release date". The Verge. Retrieved November 10, 2020.
  7. ^ Rossignol, Joe (June 22, 2020). "macOS Big Sur Listed as 'Version 11.0' in System Preferences". MacRumors. Retrieved June 24, 2020.
  8. ^ Gruber, John (June 24, 2020). "The Talk Show Remote from WWDC 2020, With Craig Federighi and Greg Joswiak". Daring Fireball. Retrieved June 25, 2020.
  9. ^ a b Gallagher, William (June 22, 2020). "Apple turns macOS up to 11 - or to 10.16". AppleInsider. Retrieved March 14, 2021.
  10. ^ Cunningham, Andrew (November 12, 2020). "macOS 11.0 Big Sur: The Ars Technica review". Ars Technica.
  11. ^ "macOS Big Sur How to Upgrade". Retrieved November 24, 2020.
  12. ^ "Apple Developer Documentation". developer.apple.com. Retrieved April 8, 2021.
  13. ^ a b Chin, Monica (June 22, 2020). "Apple announces macOS Big Sur with a brand-new design". The Verge. Archived from the original on June 22, 2020. Retrieved June 22, 2020.
  14. ^ Koloskus, Jack. "Apple, Big Sur, and the rise of Neumorphism". Input. Retrieved June 27, 2020.
  15. ^ Moorhead, Patrick. "How Apple's WWDC Is A Different Take On Familiarity". Forbes. Retrieved June 27, 2020.
  16. ^ Apple Inc. (June 22, 2020). "SF Symbols 2". apple.com. Apple Inc. Archived from the original on June 22, 2020. Retrieved June 22, 2020.
  17. ^ a b c "Apple announces Mac transition to Apple silicon" (Press release). Apple Inc. June 22, 2020. Archived from the original on June 22, 2020. Retrieved June 22, 2020.
  18. ^ Gao, Michelle (November 10, 2020). "Apple announces its first new laptop with its own chip instead of Intel's". CNBC. Retrieved November 10, 2020.
  19. ^ Blumenthal, Eli. "Apple still plans to support Intel-based Macs for years to come". Cnet. Retrieved June 22, 2020.
  20. ^ Axon, Samuel (June 22, 2020). "This is Apple's roadmap for moving the first Macs away from Intel". Ars Technica. Retrieved June 9, 2021.
  21. ^ a b c "macOS Big Sur 11.0.1 Release Notes". Apple. Retrieved December 13, 2020.
  22. ^ Owen, Malcolm (June 27, 2020). "APFS changes affect Time Machine in macOS Big Sur, encrypted drives in iOS 14". Apple Insider. Retrieved August 6, 2020.
  23. ^ a b c Oakley, Howard (June 20, 2020). "APFS changes in Big Sur: how Time Machine backs up to APFS, and more". The Eclectic Light Company. Retrieved August 6, 2020.
  24. ^ a b c d e Cunningham, Andrew (November 12, 2020). "macOS 11.0 Big Sur: The Ars Technica review". Ars Technica. Retrieved March 6, 2021.
  25. ^ "New features coming with macOS Big Sur". Apple Inc. Retrieved June 25, 2020.
  26. ^ a b Glenn Fleishman (June 22, 2020). "Big Sur Makes Changes to Many Apple Apps and Basic Features". TidBITS.
  27. ^ "macOS Big Sur Preview - Features". Apple. Archived from the original on June 22, 2020. Retrieved June 23, 2020.
  28. ^ "Big Sur's Signed System Volume: added security protection". Big Sur's Signed System Volume: added security protection. June 25, 2020. Retrieved June 28, 2020.
  29. ^ Clover, Juli (June 23, 2020). "macOS Big Sur Brings Back Startup Chime". MacRumors.
  30. ^ "Apple Developer Documentation". developer.apple.com. Retrieved March 1, 2021.
  31. ^ Porter, Jon (September 17, 2020). "Safari 14 is now available for macOS Catalina and Mojave". The Verge. Retrieved September 20, 2020.
  32. ^ "Macs Need T2 Security Chip to Play 4K HDR Netflix in macOS Big Sur". MacRumors. Retrieved October 2, 2020.
  33. ^ "Organize recordings in folders on Mac". Apple. Retrieved May 9, 2021.
  34. ^ "macOS Big Sur: The MacStories Review". macstories.net.
  35. ^ "macOS Big Sur removes System Preferences option to smooth fonts". archyde.com. November 17, 2020.
  36. ^ Song, Victoria (November 16, 2020). "It's Been a Rough Launch for Big Sur". Gizmodo. Retrieved November 17, 2020.
  37. ^ Charlton, Hartley (November 16, 2020). "macOS Big Sur Update Bricking Some Older MacBook Pro Models". MacRumors. Retrieved November 16, 2020.
  38. ^ Smith, Adam (November 16, 2020). "Apple's MacOs Big Sur Update 'Bricks' Some Older Macbooks, Users Complain". The Independent. Retrieved November 16, 2020.
  39. ^ Koetsier, John (November 16, 2020). "Apple's New 'Big Sur' Update Bricking Older Macs". Forbes. Retrieved November 16, 2020.
  40. ^ Axon, Samuel; Hutchinson, Lee (November 12, 2020). "macOS Big Sur launch appears to cause temporary slowdown in even non-Big Sur Macs". Ars Technica. Retrieved November 17, 2020.
  41. ^ Potuck, Michael (November 12, 2020). "Apple confirms widespread outages affecting downloads, more". 9to5Mac. Retrieved December 14, 2020.
  42. ^ Johnson, Jeff (November 12, 2020). "Untitled". Twitter. Retrieved December 17, 2020.
  43. ^ "MacBook Pro bricked after failed Big Sur update". Apple Forums. Retrieved December 5, 2020.
  44. ^ Collins, Barry (November 20, 2020). "MacBook Bricked By Big Sur? Here's How To Fix It". Forbes. Retrieved December 5, 2020.
  45. ^ "Apple's MacOS Big Sur update bricks some older MacBooks, users complain". The Independent. November 16, 2020. Retrieved December 5, 2020.
  46. ^ "Apple MacOS Big Sur Update is bricking some older MacBook Pro models". Tech2. November 17, 2020. Retrieved December 5, 2020.
  47. ^ Wardle, Patrick (January 13, 2021). "Hooray, no more ContentFilterExclusionList". Patreon. Retrieved February 13, 2021.
  48. ^ "What's new for enterprise in macOS Big Sur". Apple Support. Apple Inc. February 1, 2021. Retrieved February 13, 2021.
  49. ^ a b "Security experts level criticism at Apple after Big Sur launch issues". Tech Republic. November 18, 2020. Retrieved December 5, 2020.
  50. ^ Clover, Juli (February 3, 2021). "Some Users Having External Display Connection Issues With macOS Big Sur 11.1 and 11.2". Macrumors.
  51. ^ "macOS Upgrade to Big Sur Failed! Stuck Progress Bar fix & Prevention!". Mr. Macintosh. October 21, 2021.
  52. ^ "Malware Is Now Targeting Apple's New M1 Processor". Wired. ISSN 1059-1028. Retrieved February 23, 2021.
  53. ^ Goodin, Dan (February 20, 2021). "New malware found on 30,000 Macs has security pros stumped". Ars Technica. Retrieved February 23, 2021.
  54. ^ "Silver Sparrow macOS malware with M1 compatibility". Red Canary. February 18, 2021. Retrieved February 23, 2021.
  55. ^ "Thousands infected with 'mystery' virus". NewsComAu. February 22, 2021. Retrieved February 23, 2021.
  56. ^ "Apple security updates". Apple. Retrieved November 12, 2020.
  57. ^ Clover, Juli (February 15, 2021). "Revised macOS Big Sur 11.2.1 Update Properly Checks Free Available Space to Prevent Installation Errors". Macrumors. Retrieved February 16, 2021.

External links[]

  • macOS Big Sur at the Wayback Machine (archived October 18, 2021) – official site
Preceded by macOS 11 (Big Sur)
2020 		Succeeded by
Retrieved from ""