Suggest using Go64 to find 32 bit application before attempting the upGrade. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround.
Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers.
Make Time Machine Backup is very useful and can be used to Revert to Previous Working macOS Safari will open a redirect and open the Apple Store where the download can commence For Best results use Safari to commence the download as Others may not work. With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there. The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use this free app to discover which apps you haveĪre 32bit, then contact the developers of the software to see Some updates may be free, some may be paid. 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 Use Safari to download macOS 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. If you want to upgrade to Mojave or Catalina I would upgrade to macOS High Sierra first.įollow the instructions carefully below, read everything. Double-click on that to install macOS Sierra. This does not install macOS Sierra but creates the Install macOS Sierra.app which you will find in your Applications folder, On opening that you would have got an installation window. You tried to install Sierra, this downloads as InstallOS.dmg and you opened that to get the InstallOS.pkg. Okay your iMac from 2013 can upgrade as far as macOS Catalina 10.15.7.
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