Archive and Install: Choose this option to move all the System components from your existing Mac OS X installation into a folder named Previous System and then install a fresh new copy of Mac OS X. The Previous System folder cannot be used to boot but it does contain any and all files that were in any of the Mac OS X folders before you upgraded.

How to Clean Install macOS High Sierra – Includes Mar 06, 2018 How to сlean install macOS Mojave 10.14 - Setapp Sep 13, 2018

The Best Way to Run Internet Explorer 11 on a Mac | MacsPro

How to install a fresh copy of macOS on your Mac | iMore

Jul 20, 2020

Back up your Mac: This process will erase whichever OS you're currently using from your hard drive … How to Clean Install macOS Mojave Without USB Installer Sep 24, 2018 How to reinstall MacOS without a Recovery partition Jun 11, 2019