10.x, 11.x Releases


Comparison Table

(Another comparison table for more details on 10.13, 10.14, 10.15 and 11 exists in macOS 10.x Releases (10.13, 10.14, 10.15) /is/macos/10x/.)

10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur 12 Monterey 13 Ventura
Initial release 2017-09-25 2018-09-24 2019-10-07 2020-11-12 2021-10-25 2022-10-24
wikipedia wikipedia wikipedia wikipedia * wikipedia wikipedia
General J&P Notes The preferred generation also in 2021 Hated it. Was std on IM2720. NOTE: Not supported on IM2713 or earlier!
Use J&P IM2713, MBP17, and more (Sep 2021) No (IM2720 (Oct 2020)) IM2720 (Jun ’21), MBP17 (Sep ’21)
32-bit support Yes Yes, last gen. No No No No
Ergo 4000 keyboard ControllerMate (don’t care) Special Key Handler Special Key Handler Special Key Handler Special Key Handler
Apple News+ No (10.14.4) Yes Yes    
Dashboard (F12) Yes Yes No (removed)
(Notification Center)
No (removed)
(Notification Center)
Default shell bash bash zsh      
“iTunes” iTunes iTunes iTunes is replaced by separate MusicPodcastsTV and Books apps (As Catalina)
 Support for OS
on specific HW, e.g.
10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur 12 Monterey 13 Ventura
MacBook 2008 No (don’t care) No No No No
iMac 2011, 2010 Yes -“- No No No No
iMac 2013 Yes, & used ’21-09 -“- Yes, & upgr. to  ’21-11 (more) No No No
(MacBook Pro 13″ Early 2015) Yes -“- Yes Yes ### ###
MacBook Pro 15″, 2016 Yes, & used ’21-09 -“- Yes Yes Yes (used) ###
iMac 2020 (n/a, came w 10.15) -“- Yes, came w 10.15 Yes, and used ’21-09 ### ###
MacBook Pro 14″, 2021 (M1) (n/a) -“- (n/a) (n/a) Yes (came with) Yes



The main reason why sticking to macOS 10.13 High Sierra all the way into September 2021 was the preference to stay with some applications:

  • MS Office 2011 – absolutely “good enough” and still had very nice feature of reopening all open docs/windows of application (Word, Excel, PowerPoint) was restated (or suddenly died), feature that WAS REMOVED (!!) from Office 2016/Office 365.
  • Adobe CS5 suite (including e.g. Photoshop, Dreamweaver, and many more apps) – with perpetual license (no annoying subscription, which is only choice for many Adobe apps nowadays)
  • See also comparison table in macOS 10.x Releases (10.13, 10.14, 10.15) /is/macos/10x/.)



macOS 10.13 High Sierra Upgrade to Anything 64-bit

Manuals (At/By Apple)




More – not (yet) here…

… but on local desktop and Dropbox file share

Trickier subjects…

  • /mlabs/audio/
  • Keyboards! (Lots off-line, only, for the time being)

Most materials so far are not in this CMS.


Hidden Things

(Called them Hidden just because both /Library/ and ~/Library/ are commonly hidden in Finder for users.)

  • Contextual Menu Items ###
  • iCloud – hidden away things are covered in our iCloud section
  • QuickLook
    • /Library/QuickLook/
      • IM2713 (2020-12) iBooksAuthor.qlgenerator, iWork.qlgenerator
    • ~/Library/QuickLook/
      • IM2713 (2020-12)
        • Archive.qlgenerator
        • DropboxQL.qlgenerator
        • mpo.qlgenerator
        • qlImageSize.qlgenerator
  • $HOME/, ~/Library/Mail
  • Scripts
    • /Library/Scripts
  • Services
    • ~/Library/Services/
      • IM2713 (2020-12): quite a few, incl. Email Archive2FSx.workflow, New Text File.workflow
  • Spotlight
    • /Library/Spotlight/
  • Widgets
    • /Library/Widgets
  • Workflows
    • ~/Library/Workflows
      • Applications/                  ( ~/Library/Workflows/Applications/ )
        • Calendar/
        • Folder Actions/    ( ~/Library/Workflows/Applications/Folder Actions/ )
          • IM2713 (2020-12):
            • Camera Uploads organizer.workflow,
            • MetaDataMover-tests.workflow,
            • Navionics-exports-processing.workflow
            • Screenshot-Filename-Cleaning-FolderAction.workflow
        • Image Capture/


There are actually three ‘Library’ areas:

  1. ~/Library – user’s own
  2. /Library – shared
  3. /System/Library – shared



AppleScript.component AudioCodecs.component AudioDSP.component AUSpeechSynthesis.component CoreAudio.component IOFWDVComponents.component IOQTComponents.component JavaScript.component PDFImporter.component QuickTimeAudioComponents.component SoundManagerComponents.component


Input Methods


Specific Topics


“Continuity is Apple‘s name for the various technologies that tie its devices together, allowing an iPad to be used as a Mac monitor and an iPhone to provide an Instant Hotspot. There are so many little things that happen automatically or with minimal effort, that some may go unnoticed. While it’s a pleasant surprise to discover a new Continuity feature, it is even more valuable to know about what is possible in advance.

Apple began adding Continuity features in 2014 with the launch of iOS 8.1 and OS X Yosemite, version 10.10. For the first time, Apple’s AirDrop file transfer technology could connect a Mac to an iPhone or iPad, updating OS X to use the same protocol as iOS, which combines Bluetooth for discovery and Wi-Fi for fast transfer. These operating system updates also introduced Handoff, the feature that may have inspired the name of Continuity.” []



System Extensions

About system extensions and macOS –

Some system extensions aren’t compatible with current versions of macOS or won’t be compatible with a future version of macOS. Learn what to do if you see an alert about system extensions or kernel extensions.

System extensions work in the background to extend the functionality of your Mac. Some apps install kernel extensions, or kexts—a kind of system extension that works using older methods that aren’t as secure or reliable as modern alternatives. Your Mac identifies these as legacy system extensions.

In 2019, Apple informed developers that macOS Catalina will be the last macOS to fully support legacy system extensions, and we’ve been working with developers to transition their software.


10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur
Initial release 2017-09-25 2018-09-24 2019-10-07 2020-11-12
32-bit support Yes Yes, last gen. No No
Extensions kext kext An upgrade from Kexts. System extensions avoid the problems of Kexts. There are 3 kinds of System extensions: Network Extensions, Endpoint Security Extensions, and Driver Extensions. System extensions run in userspace, outside of the kernel.[12][13] Catalina will be the last version of macOS to support legacy system extensions.[14][15] ###