Documenting How to Boot Qubes from USB Drive

Following up a question a user had about installing Qubes from a USB stick, I noticed something was missing from the installation instructions:

Given this changes wildly from computer to computer, I wanted to ask for feedback on my specific proposal, in case you can spare the time. I specifically would like to know if my changes would work in situations you’ve come across:

if you want to give general feedback about how to document this, then please do so in the associated issue: