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  1. #1
    Prevent update to Catalina
    Because of 32 bit apps I'm going to install Catalina on an external drive.

    Other than unticking the box on my existing OS that says automatically update, is there anything else I need to do to prevent the update?

    Sent from my Pixel 3a using Mac-Forums mobile app

  2. #2
    Prevent update to Catalina
    Slydude's Avatar
    Member Since
    Nov 16, 2009
    North Louisiana, USA
    Your Mac's Specs
    2.8 GHz 2008 MacBook Pro 10.11, 8 GB mem, iPhone XS, 2015 iMac 16 GB 10.14.4 beta
    Rep Power
    Someone else may chime in to confirm this but I don't think there is anything else that needs to be done.
    “Hard work beats talent when talent fails to work hard.”
    Kevin Durant

  3. #3
    Thanks, I was just wondering in case there was something else I had to do

    Sent from my Pixel 3a using Mac-Forums mobile app

  4. #4
    Prevent update to Catalina
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Pawtucket, RI, US
    Your Mac's Specs
    L2014 Mac mini macOS 15, iPhone 8+ iOS 13, 12.9" iPad Pro 1 iPadOS 13,  Pencil 1
    Rep Power
    That should work. Although updates are different than upgrades.
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  5. #5
    Prevent update to Catalina
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Your Mac's Specs
    iMac 5K Retina 27", August 2019, 3.6GHz Intel Core i9, Memory 32GB, 2TB SSD, macOS Mojave 10.14.6
    Rep Power

    You don't actually say what your current Operating System (OS) is.

    If macOS High Sierra or earlier, then Open App Store > App Store Preferences and Uncheck such boxes as appropriate.

    If running macOS Mojave, then as well as doing this, Open System Preferences > Software Update > Advanced - and once again review the choices on offer and Uncheck the boxes that apply. They are self explanatory.


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