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macOS installers for 10.15 ?

I have several Macs to update. Where can I find the macOS installers and updates for 10.14 and 10.15 that I can download onto thumbdrives?

iMac 21.5" 4K, macOS 10.14

Posted on Oct 29, 2019 1:34 PM

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14 replies

Oct 29, 2019 4:40 PM in response to Larry Nolan

In System Preferences : Software update, it will take a leap of faith, but proceed with what initially seems like an installation. It will download the full Catalina installer, tell you it is preparing to install, and with a great sigh of relief, the familiar Catalina application installer panel opens on the Desktop with the continue button. Quit this panel, and you will find the Catalina installer saved in your /Applications folder. This is the only means to acquire a full Catalina installer that I know about, and the one that I performed myself.


Then you can create a bootable USB stick (16GB) with Apple's instructions. You could also copy the Catalina installer itself to an external drive, as it will vanish after an upgrade.

Oct 29, 2019 4:14 PM in response to Larry Nolan

The problem with that page is - as far as i know - that all of those are simply incremental updates, not full installers (unless Apple has changed that lately). They require the original 10.14 or whatever in order to work. Starting with Cataline - again as far as I know - the only access is through the app store. But, I've been wrong before.....

macOS installers for 10.15 ?

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