How to Create a MacOS Catalina Beta USB Bootable Install Drive

Advanced Mac users can make a bootable macOS Catalina beta installer drive using a USB flash drive. This offers a simple way to install the macOS 10.15 beta release onto a test Mac, either on a separate drive or partition.
Using a boot installer drive allows for easy formatting and partitioning of disks too, making it simple to perform a clean installation of macOS Catalina 10.15 beta onto a target Mac. Of course the boot installer can also be used to upgrade an existing installation to MacOS Catalina beta as well.
This tutorial will demonstrate how to create a bootable USB install drive for MacOS Catalina 10.15 beta.
















