Your Mac is probably running 32bit apps and these will need to be updated to 64bit apps, If you are considering upgrading to Catalina be warned it does not support 32bit apps.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'. Go to the Applications folder locate Install macOS ******.app. If the App Store says ‘Open’ then it is detecting a previous download of the install app Go to the Download OS section and click on the OS you want to install.īefore upgrading make a full back up of your Mac.Ĭheck that third party apps you use have updates available for the new OS.Ĭheck that your printers/ scanners etc have updated drivers and software available for the new OS.Ĭonnect your mac to your router via cable rather than rely on WiFi.ĭo not use your mac while it is downloadingĪnd do not use any other devices that share the same internet connection. How to get old versions of macOS – Apple Support Read all instructions thoroughly and take notice of the bold text.įor Mac OS X El Capitan, macOS High Sierra, macOS Mojave or macOS Catalina, I would recommend you upgrade to macOS High Sierra 10.13 first. If you want to install Mojave you can download that via the App Store, the installer app will download directly to your Applications folder as Install macOS Mojave.app and will install version 10.14.6.Īs your mac can upgrade to the newer OS's like macOS Mojave 10.14 and macOS Catalina 10.15, Will allow you to install a full working version of Mac OS X El Capitan and that version will be 10.11.6, this is all you need. If you want El Capitan you will be guided to download the InstallMacOSX.dmg which once downloaded and processed

The link below will take you to an Apple article with information how to get the full installers for various OS's. If you have tried to install a Security Update for Mojave you need to be running Mojave in the first Installing a newer OS is called an upgrade.Īny updates you downloaded from Apple Support Downloads are not full installers so if you have tried to installĮl Capitan update 10.11.2 you need to be running an earlier version of Mac OS X El Capitan before you can install The App Store Updates page only informs you of updates available for the OS you are running.

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