How to make a Bootable External Hard drive for a Mac with

This is a quick video on how to create a bootable hard drive and install 3 Operating Systems. For this video we are going to install 10.10 Yosemite, 10.11 El Capitan, 10.12 macOS Sierra. You must create a bootable USB of each of the Operating system before you reboot the machine to run the installer. Here is a link to the website to help you do this. Once you have created your USB Bootable OSX drive reboot the machine you will use to install the OS to the external drive. YOU MUST PRESSHow to Use:
Open destination folder and locate file notes.txt, open it and read step by step.
Enjoy!
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