10.x, 11.x Releases

  • 10.13 High Sierra
    • J&P general note: like (liked) it a lot, definitely “good enough” and could run Office 2011, Adobe CS5 non-subscription suite
    • J&P systems use: IM2713 (upgr 10.15, ’21-11 (more)), 10 11, MBP17, …
    • CPU support: 64-bit Intel
    • App support: 32/64 -bit Intel
  • 10.14 Mojave
    • J&P general note: Hated it, due to warning dialogs (32-bit is ending) a la MS Vista, way too many too often!
      • Yes, last gen that do support, though w/ lots of irritating warnings (was so bad, actually downgraded to 10.13)
    • J&P systems use: Not on any primary system
    • CPU support: 64-bit Intel
    • App support: 32/64 -bit Intel
    • Last macOS that can run Office 2011, Adobe non-subscr. SW, ..
  • 10.15 Catalina
    • J&P general note: cannot any longer use favorite and/or specific bought software
      • MS Office 2011: due to being 32-bit-only, can’t run on 10.15
        • And this version DO re-open all open windows when an application is restarted (Word, Excel, PowerPoint)
          • Something Office 365 HAS removed! Yes, it’s true – finally got it confirmed from a 2 hours support call w/ Microsoft and ending up deep into the most advanced support
      • Adobe CS5 suite (Dreamweaver, Photoshop, ….), also due to being 32-bit-only, can’t run on 10.15
        • And for this we have perpetual license! (Nowadays, Adobe forces these subscription-only licenses)
    • J&P systems use: IM2713 (upgr 10.15, ’21-11 (more))
    • CPU support: 64-bit Intel
    • App support: 64 -bit Intel (NOT 32-bit)
    • Change default shell from bash to zsh
  • 11.0 Big Sur – /is/macos/11/


Comparison Table

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
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
Ergo 4000 keyboard ControllerMate (don’t care) Special Key Handler Special Key Handler
Applications 10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur
MS Office suite Office 2011 (32-bit)- love it (don’t care) Office 365 – miss 2011!! <– (Office 2011 in VM)
  Office 2011 Yes (Yes) No No
  Office 365 Downloaded No (Yes) Yes Yes
  Office 365 Web-based Yes (Yes) Yes Yes
Adobe suite (Dreamweaver,… CS5 (32-bit) (don’t care) CAN’T USE our CS5 license. <–
Homebrew (brew) USED to work fine, but not Sep 2021… 2021-09-26: min 10.14 for brew Yes Yes
MacPorts (port) (Not used too much in recent years.) 2021-09-26: min 10.14 for brew Yes Yes
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)
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] ###
 Support for OS
on specific HW, e.g.
10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur
MacBook 2008 No (don’t care) No No
iMac 2011, 2010 Yes -“- No No
iMac 2013 Yes, & used ’21-09 -“- Yes, & upgr. to  ’21-11 (more) No
MacBook Pro 2017 Yes, & used ’21-09 -“- Yes Yes
(MacBook Pro 13″ Early 2015) Yes -“- Yes Yes
iMac 2020 (?, came w 10.15) -“- Yes, came w 10.15 Yes, and used ’21-09



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)



macOS 10.13 High Sierra Upgrade to Anything 64-bit

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 – this one is a little bit interesting
    • ~/Library/Mobile Documents/
      • -JohanWasHere
      • Automator
        • ~/Library/Mobile Documents/com~apple~Automator/Documents/
      • Desktop
      • Documents
        • ~/Library/Mobile Documents/com~apple~CloudDocs/Documents/
        • ~/Library/Mobile Documents/com~apple~CloudDocs/Documents/gpxparser/
      • Downloads
      • FileExplorer
      • GarageBand for iOS
      • iMovie
      • Map Plus
      • Pages
      • Preview
      • Shortcuts
      • TextEdit
        • ~/Library/Mobile Documents/com~apple~TextEdit/Documents/
  •  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


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.