If you want the ability to perform a fresh and clean install of macOS High Sierra, then you should consider creating a bootable macOS High Sierra USB install drive. Not only will this walkthrough ...

A macOS Catalina USB install drive is a great tool to have on hand to for quick and easy macOS 10.15 reinstalls. We show you how in this video tutorial.

PROMOTION Create a bootable installer on Mac FREE EaseUS Data Recovery Wizard for Mac is not only a hard drive recovery tool on macOS devices but also a bootable installer creator.

Now I have a bootable USB drive which can both install ML and run diagnostics. That’s exactly what I like to do with my USB installers.

People who create a USB stick are doing so because they want to be able to boot from the sick and completely erase the hard drive to do a clean install.