How to Install Older Versions of MacOS

How to Install Older Versions of MacOS

Picture 1. How to Install Older Versions of MacOS.

How to Install Older Versions of MacOS

Why? You may want to do this after updating your Apple machine but realizing that it runs too slow and you want to go back or perhaps you would like a fresh install of your older MacOS after it has become slow but don’t want to risk an update after reinstalling. This is how you do it...

  1. Download the installer for the specific version of MacOS you want from here
  2. Run the .pkg file that downloads, it will install the installer as an App. When done, run this App and it will begin the installation of the previous version of MacOS
  3. Follow the onscreen instructions in the installer. It might be easiest to begin installation in the evening so that it can complete overnight, if needed.