Ah - ok - step 5 of the ‘create the USB boot stick’ stuff addresses the above … it says that this can happen in a 2018 MacBook Air and potentially machines after that.
Tim, how about adding ‘Including the 2019 MacBook Pro 16 inch’ to that list of machines that need step 5 to be done… to save others having to do so much experimentation as I’m having to do…?
Alas, though, when I tried that USB drive again (from scratch)- - including step 5 - sadly, I see yet another failure mode on the journey toward bringing up a Dos command prompt (I haven’t even got as far as trying to inject the new drivers yet…)
So - to be clear, I went back and did all this again:
… including step 5 this time…
… And then I booted the USB drive.
This time the USB drive booted, put up a blue window saying "Setup is Starting’ and sat there for several minutes. No dialog box about not being able to install drivers this time… which is good.
… but after a few minutes, I got a different BSOD failure and system reboot - which is bad.
The failure mode this time (see attached image) is “DRIVER_PNP_WATCHDOG”
This is getting to be a bit…frustrating.
What’s the next step, Tim? Did this really work fine for you with a MacBook Pro 16?
It sure isn’t working for me…