How Much Ram Does Catalina Need

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16th major version of the macOS operating system

macOS Catalina
A version of the macOS operating organisation
MacOS Catalina Desktop.png

Screenshot of the macOS Catalina desktop in dark way

Programmer Apple Inc.
OS family
  • Macintosh
  • Unix
Source model Airtight, with open source components
Full general
October 7, 2019; 2 years ago
Latest release 10.xv.7 Security Update 2022-004[2]
(19H1922) (May 16, 2022; 41 days ago
Update method Software Update
Platforms x86-64
Kernel type Hybrid (XNU)
License APSL and Apple EULA
Preceded by macOS Mojave
Succeeded by macOS Big Sur
Official website world wide at the Wayback Auto (archived November 9, 2020)
Support condition

macOS Catalina
(version ten.xv) is the sixteenth major release of macOS, Apple Inc.’s desktop operating organisation for Macintosh computers. It is the successor to macOS Mojave and was announced at WWDC 2019 on June three, 2019 and released to the public on October 7, 2019. Catalina is the starting time version of macOS to support merely 64-fleck applications and the commencement to include Activation Lock.[4]
It is also the last version of macOS to take the major version number of 10; its successor, Big Sur, released on November 12, 2020, is version 11.[6]
In order to increase web compatibility, Safari, Chromium and Firefox have frozen the Bone in the user agent running in subsequent releases of macOS at Catalina.[8]

The operating system is named after Santa Catalina Island, which is located off the coast of southern California.

System requirements


macOS Catalina officially runs on all standard configuration Macs that supported Mojave. 2010–2012 Mac Pros, which could run Mojave merely with a GPU upgrade, are no longer supported.[five]
Catalina requires iv GB of retention, an increase over the 2 GB required by Lion through Mojave.[11]

  • iMac: Late 2012 or newer
  • iMac Pro
  • MacBook: Early on 2015 or newer
  • MacBook Air: Mid 2012 or newer
  • MacBook Pro: Mid 2012 or newer, Retina display not needed
  • Mac Mini: Belatedly 2012 or newer
  • Mac Pro: Tardily 2013 or newer

It is possible to install Catalina on many older Macintosh computers that are not officially supported by Apple. This requires using a patch to change the install prototype.[13]



  • AirPort Utility
  • App Store
  • Archive Utility
  • Audio MIDI Setup
  • Automator
  • Bluetooth File Substitution
  • Books
  • Boot Camp Assistant
  • Calculator
  • Calendar
  • Chess
  • ColorSync Utility
  • Console
  • Contacts
  • Dictionary
  • Digital Colour Meter
  • Disk Utility
  • DVD Actor
  • FaceTime
  • Notice My
  • Font Book
  • GarageBand (may non be pre-installed)
  • Grapher
  • Home
  • iMovie (may not exist pre-installed)
  • Image Capture
  • Keychain Access
  • Keynote (may not be pre-installed)
  • Mail
  • Migration Assistant
  • Music
  • News (only bachelor for Commonwealth of australia, Canada, Britain, and United States)
  • Notes
  • Numbers (may not be pre-installed)
  • Pages (may not be pre-installed)
  • Photo Booth
  • Podcasts
  • Preview
  • QuickTime Player
  • Reminders
  • Screenshot (succeeded Catch since Mojave)
  • Script Editor
  • Stickies
  • Stocks
  • Organisation Information
  • Terminal
  • TextEdit
  • Time Automobile
  • Television
  • Voice Memos
  • VoiceOver Utility
  • X11/XQuartz (may not be pre-installed)







Catalyst is a new software-development tool that allows developers to write apps that can run on macOS, iOS and iPadOS. Apple demonstrated several ported apps, including Jira and Twitter (subsequently the latter discontinued its macOS app in February 2018).[14]

System extensions


An upgrade from Kexts. System extensions avert the issues of Kexts. There are 3 kinds of System extensions: Network Extensions, Endpoint Security Extensions, and Driver Extensions. Organization extensions run in userspace, outside of the kernel.[17]
Catalina volition be the last version of macOS to support legacy system extensions.[19]



A replacement for IOKit device drivers, commuter extensions are built using DriverKit. DriverKit is a new SDK with all-new frameworks based on IOKit, only updated and modernized. It is designed for building device drivers in userspace, exterior of the kernel.[21]



Mac apps, installer packages, and kernel extensions that are signed with a Developer ID must be notarized by Apple to run on macOS Catalina.[22]

Activation Lock


Activation Lock helps preclude the unauthorized employ and bulldoze erasure of devices with an Apple T2 security chip (2018, 2019, and 2020 MacBook Pro; 2020 5K iMac; 2018 MacBook Air, iMac Pro; 2018 Mac Mini; 2019 Mac Pro).[5]

Defended system volume


The arrangement runs on its ain read-only volume, separate from all other data on the Mac.[5]

Voice control


Users can give detailed voice commands to applications.[24]
On-device machine processing is used to offer better navigation.[five]



Sidecar allows a Mac to use an iPad (running iPadOS) equally a wireless external display. With Apple Pencil, the device can also exist used as a graphics tablet for software running on the computer.[15]
Sidecar requires a Mac with Intel Skylake CPUs and newer (such equally the fourth-generation MacBook Pro), and an iPad that supports Apple Pencil.[26]

Support for wireless game controllers


The Game Controller framework adds support for two major console game controllers: the PlayStation 4’s DualShock four and the Xbox I controller.[28]

Time Machine


A number of under-the-hood changes were fabricated to Time Machine, the backup software. For example, the mode in which backup information is stored on network-attached devices was changed, and this change is not backwards-compatible with earlier versions of macOS.[32]
Apple tree declined to document these changes, only some of them have been noted.[32]





iTunes is replaced by dissever Music, Podcasts, TV and Books apps, in line with iOS. iOS device management is now conducted via Finder.[33]
The TV app on Mac supports Dolby Atmos, Dolby Vision, and HDR10 on MacBooks released in 2018 or later, while 4K HDR playback is supported on Macs released in 2018 or afterwards when continued to a compatible display.[fifteen]

iTunes can however be installed and will work separately from the new apps (according to back up information on Apple’s website).

Discover My


Find My Mac and Notice My Friends are merged into an application chosen Discover My.



The Notes awarding was enhanced to allow amend management of checklists and the ability to share folders with other users. The awarding version was incremented from iv.6 (in macOS 10.14 Mojave) to 4.7.



Amongst other visual and functional overhauls, attachments can be added to reminders and Siri can intelligently estimate when to remind the user nearly an issue.[five]

Vocalization Memos


The Voice Memos application, first ported from iOS to the Mac in macOS 10.14 Mojave as version ii.0, was incremented to version 2.1.

Removed or inverse components


macOS Catalina exclusively supports 64-chip applications. 32-bit applications no longer run (including all software that utilizes the Carbon API as well equally QuickTime 7 applications, image, audio and video codecs). Apple has also removed all 32-bit-only apps from the Mac App Store.[35]

Z shell (executable “zsh”) is the default login shell and interactive shell in macOS Catalina,[36]
replacing Bash, the default shell since Mac OS X Panther in 2003.[37]
Bash continues to be available in macOS Catalina, forth with other shells such every bit csh/tcsh and ksh.

Dashboard has been removed in macOS Catalina.[38]

The ability to add Backgrounds in Photograph Booth was removed in macOS Catalina.

The command-line interface GNU Emacs awarding was removed in macOS Catalina.

Built-in support for Perl, Python 2.7 and Carmine are included in macOS for compatibility with legacy software.[39]
Future versions of macOS will not include scripting linguistic communication runtimes by default, possibly requiring users to install additional packages.[40]

Legacy AirDrop for connecting with Macs running Mac OS X Lion, Mount Panthera leo and Mavericks, or 2011 and older Macs has been removed.[41]



Catalina received favorable reviews on release for some of its features.[42]
However, some critics found the Os version distinctly less reliable than earlier versions.[43]
The broad addition of user-facing security measures (somewhat coordinating to the add-on of User Account Command dialog boxes with Windows Vista a decade earlier) was criticized as intrusive and annoying.[45]

Release history


Previous release Current release
Version Build Appointment Darwin version Release Notes Standalone download
ten.xv 19A583 October 7, 2019 19.0.0 Original Software Update release

Security content

19A602 October xv, 2019 Supplemental update
19A603 October 21, 2019 Revised Supplemental update
x.15.i 19B88 October 29, 2019 nineteen.0.0
About the macOS Catalina Update

Security content

macOS x.15.1 Update
10.15.2 19C57 Dec 10, 2019 19.ii.0
Nearly the macOS Catalina 10.15.2 Update

Security content

macOS 10.15.two Update

macOS 10.15.2 Combo Update

x.fifteen.three 19D76 January 28, 2020 19.3.0
About the macOS Catalina ten.fifteen.three Update

Security content

macOS 10.15.3 Update

macOS 10.15.3 Combo Update

10.fifteen.four 19E266 March 24, 2020 19.4.0
About the macOS Catalina x.fifteen.iv Update

Security content

macOS ten.xv.4 Update

macOS 10.fifteen.4 Combo Update

19E287 April 8, 2020 Supplemental update macOS 10.fifteen.four Supplemental Update
ten.15.5 19F96 May 26, 2020 nineteen.five.0
Virtually the macOS Catalina 10.15.5 Update

Security content

macOS 10.15.5 Update

macOS 10.15.5 Combo Update

19F101 June ane, 2020 nineteen.v.0
Supplemental update

Security content

macOS 10.15.5 Supplemental Update
10.15.six 19G73 July 15, 2020 19.6.0

Jul 5 00:43:10 PDT 2020
About the macOS Catalina 10.15.6 Update

Security content

macOS 10.xv.six Update

macOS 10.15.half dozen Combo Update

19G2021 August 12, 2020 xix.half dozen.0

Jun eighteen 20:49:00 PDT 2020
Supplemental update macOS ten.fifteen.6 Supplemental Update 19H2 September 24, 2020 xix.6.0

Mon Aug 31 22:12:52 PDT 2020
Almost the macOS Catalina 10.15.7 Update

Security content

macOS 10.fifteen.7 Update

macOS 10.15.7 Combo Update

19H4 October 27, 2020
19H15 Nov v, 2020 xix.6.0

Thu Oct 29 22:56:45 PDT 2020
Supplemental update

Security content

macOS ten.15.7 Supplemental Update

macOS 10.15.7 Supplemental Update (Combo)

19H114 December fourteen, 2020 19.6.0

Tue November x 00:10:30 PST 2020
About the security content of Security Update 2020-001 Security Update 2020-001 (Catalina)
19H512 February 1, 2021 19.6.0

Tue Jan 12 22:xiii:05 PST 2021
About the security content of Security Update 2021-001 Security Update 2021-001 (Catalina)
19H524 February 9, 2021 Supplemental Update

Security content

macOS Catalina ten.15.7 Supplemental Update 2
19H1030 April 26, 2021 19.6.0

Monday Apr 12 20:57:45 PDT 2021
Well-nigh the security content of Security Update 2021-002 Security Update 2021-002 (Catalina)
19H1217 May 24, 2021 19.half dozen.0

Thu May half-dozen 00:48:39 PDT 2021
Nigh the security content of Security Update 2021-003 Security Update 2021-003 (Catalina)
19H1323 July 21, 2021 xix.half dozen.0

Thu Jun 22 19:49:55 PDT 2021
Almost the security content of Security Update 2021-004 Security Update 2021-004 (Catalina)
19H1417 September 13, 2021

Tue Aug 24 twenty:28:00 PDT 2021
About the security content of Security Update 2021-005 Security Update 2021-005 (Catalina)
19H1419 September 23, 2021 nineteen.6.0

Thu Sep sixteen xx:58:47 PDT 2021
Most the security content of Security Update 2021-006 Security Update 2021-006 (Catalina)
19H1519 October 25, 2021 19.6.0

Tue Oct 12 18:34:05 PDT 2021
Almost the security content of Security Update 2021-007 Security Update 2021-007 (Catalina)
19H1615 December thirteen, 2021 19.6.0

Sun November 14 19:58:51 PST 2021
Virtually the security content of Security Update 2021-008 Security Update 2021-008 (Catalina)
19H1713 January 26, 2022 19.six.0

Thu Jan 13 01:26:33 PST 2022
About the security content of Security Update 2022-001 Security Update 2022-001 (Catalina)
19H1715 February 14, 2022 Security Update 2022-002 Security Update 2022-002 (Catalina)
19H1824 March 14, 2022 19.6.0

Tue Feb xv 21:39:11 PST 2022
Almost the security content of Security Update 2022-003 Security Update 2022-003 (Catalina)
19H1922 May 16, 2022 19.half dozen.0

Mon April 18 21:fifty:40 PDT 2022
About the security content of Security Update 2022-004 Security Update 2022-004 (Catalina)



  1. ^

    “macOS Catalina”.
    Apple tree Inc.

  2. ^

    Clover, Juli (May sixteen, 2022). “Apple Releases macOS Monterey 12.4 With Support for Studio Brandish Webcam Update”.
    . Retrieved
    May 16,
    Apple has besides released a macOS Large Sur eleven.6.half-dozen update for those who are notwithstanding running Large Sur, as well as a macOS Catalina 2022-004 security update.

  3. ^

    “Apple tree security updates”.
    Apple Back up. May 16, 2022. Retrieved
    May 16,

  4. ^

    “Apple tree previews macOS Catalina” (Press release). Apple Inc. June 3, 2019. Retrieved
    June 4,

  5. ^







    “macOS Catalina”.
    Apple Inc.

  6. ^

    Carman, Ashley (Nov x, 2020). “Apple tree announces macOS Large Sur release date”.
    The Verge
    . Retrieved
    November x,

  7. ^

    “Apple tree unveils macOS 11.0 Big Sur, featuring a new aesthetic and redesigned apps”.
    . Retrieved
    June 22,

  8. ^

    “1175225 – chromium – An open-source project to assist move the web forward. – Monorail”.
    . Retrieved
    February 25,

  9. ^

    “1679929 – Cap the User-Agent string’due south reported macOS version at 10.xv”.
    . Retrieved
    February 25,

  10. ^

    “217364 – [macOS] Crash-land reported current shipping release UA to 10_15_7”.
    . Retrieved
    Feb 25,

  11. ^

    “How to upgrade to macOS Catalina”.
    Apple tree Support. Archived from the original on October 21, 2019.

  12. ^

    “How to upgrade to macOS Mojave”.
    Apple Support. Archived from the original on December 19, 2019.

  13. ^

    “macOS Catalina Patcher”.
    . Retrieved
    February 9,

  14. ^

    Statt, Nick (February 16, 2018). “Twitter discontinues its Mac desktop app subsequently years of spotty back up”.
    The Verge
    . Retrieved
    June three,

  15. ^




    Warren, Tom (June 3, 2019). “Apple unveils new macOS update with iPad apps”.
    The Verge
    . Retrieved
    June 3,

  16. ^

    “iOS apps will run on macOS with Project Catalyst”.

  17. ^

    Apple tree Programmer Documentation.

  18. ^



    System Extensions and DriverKit.
    Apple Developer Documentation.

  19. ^

    “Kernel Extensions Won’t Work in macOS 10.sixteen”. The Mac Observer. March 26, 2020.

  20. ^

    “Apple tree begins phasing out kernel extensions in macOS 10.xv.4”. AppleInsider. March 25, 2020.

  21. ^

    Apple Developer Documentation.

  22. ^

    “Developer ID: Upcoming Requirements”.
    Apple Developer.

  23. ^

    Shankland, Stephen (June 7, 2019). “Here are half dozen MacOS Catalina security changes coming from Apple this fall”.

  24. ^

    “Vocalisation Control”
    (PDF). September 2019.
    Vox Control lets users command the entire device with spoken commands and specialized tools, while Siri is an intelligent assistant that lets users enquire for information and complete everyday tasks using natural language. Voice Control offers comprehensive capabilities such as phonation gestures, name and number labels, grid overlays, text editing commands, and deep customization, while Siri assists with setting reminders, making appointments, looking up directions, and learning game scores.

  25. ^

    O’Hara, Andrew. “You tin can use your iPad as a second display with Sidecar in macOS Catalina”.
    . Retrieved
    June three,

  26. ^

    Cunningham, Andrew (October vii, 2019). “macOS 10.15 Catalina: The Ars Technica review”.
    Ars Technica
    . Retrieved
    Oct 7,

  27. ^

    Peters, Jay (Oct 7, 2019). “You need a MacBook with a butterfly keyboard or a mod Mac desktop to apply macOS Catalina’southward Sidecar”.
    The Verge
    . Retrieved
    October eight,

  28. ^

    “Supporting New Game Controllers”.
    Apple Developer
    . Retrieved
    July v,

  29. ^

    “Apple tree calculation support for PS4, Xbox One controllers to iOS, TVOS and MacOS”.
    . Retrieved
    July 5,

  30. ^

    “iOS 13: How to connect a PlayStation controller or Xbox game controller to your iPhone and iPad”.
    9to5mac. September 2019. Retrieved
    September 6,

  31. ^

    “How To Connect PS4, Xbox One Controller To iPhone, Apple TV, Mac”.
    ValueWalk. September 2, 2019. Retrieved
    September 6,

  32. ^



    Oakley, Howard (Nov 11, 2019). “Time Machine and backing up in Catalina”.
    Eclectic Light
    . Retrieved
    March eleven,

  33. ^

    Carman, Ashley (June 3, 2019). “Apple tree breaks up iTunes, creates separate Podcasts, Telly, and Music apps for macOS”.
    The Verge
    . Retrieved
    June 3,

  34. ^

    Roettgers, Janko (June three, 2019). “Apple Is Officially Killing iTunes, Replacing Information technology With Three Dedicated Media Apps”.
    . Retrieved
    June 3,

  35. ^

    Conner, Katie (September 10, 2019). “235 Mac apps become the ax with Apple tree’south next update. Here’southward how y’all find them on your rig”.

  36. ^

    “Use zsh as the default trounce on your Mac – Apple Support”. Retrieved
    July 1,

  37. ^

    Landau, Ted; Frakes, Dan (December twenty, 2005).
    Mac OS X Help Line, Tiger Edition. Peachpit Press. ISBN9780132705240.

  38. ^

    Statt, Nick (June 4, 2019). “Apple will permanently remove Dashboard in macOS Catalina”.
    The Verge
    . Retrieved
    June five,

  39. ^

    “macOS 10.15 Catalina Deprecates UNIX Scripting Languages”. The Mac Observer. June 5, 2019.

  40. ^

    “macOS 10.xv Beta Release Notes”.
    Apple Developer
    . Retrieved
    June vi,
    Scripting linguistic communication runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. Future versions of macOS won’t include scripting language runtimes by default, and might require you to install additional packages.

  41. ^

    “Can not connect my 2 macs with AirDrop”.

  42. ^

    Cunningham, Andrew (October vii, 2019). “macOS ten.15 Catalina: The Ars Technica review: Conclusions”.
    Ars Technica
    . Retrieved
    June 23,

  43. ^

    Shayer, David (October 21, 2019). “Six Reasons Why iOS 13 and Catalina Are So Buggy”.
    . Retrieved
    June 23,

  44. ^

    Modern, Craig. “Brilliant Hardware in the Valley of the Software Slump”. Craig Modern. Retrieved
    June 23,

  45. ^



    Gruber, John. “My 2019 Apple Report Card”.
    Daring Fireball
    . Retrieved
    June 23,

  46. ^

    Bohn, Dieter (October seven, 2019). “macOS Catalina review: transition period”.
    The Verge
    . Retrieved
    June 23,

  47. ^

    Gruber, John. “What You lot Run across in the Finder Should E’er Be Correct”.
    Daring Fireball
    . Retrieved
    June 23,

  48. ^

    Snell, Jason (January 31, 2020). “Apple in 2019: The Six Colors report card”.
    Six Colors
    . Retrieved
    June 23,

External links


  • macOS Catalina at the Wayback Machine (archived 2020-11-09) – official site
  • macOS Catalina download folio at Apple tree