Hi Ben. I am not sure why I was no longer subscribed to your thread which I just had to go and do myself.
As to your inquiry in this thread about Safe Mode, what I see in the command syntax you typed out above is that some space are missing. Each word has a space in between: bcdedit /set {default} safeboot minimal
This isn't easy to tell if you're looking at the Command Prompt rendering of it in the tutorial instead of the typed out version in the text above it: https://www.digitalcitizen.life/4-ways-boot-saf...
In your other thread you were asking about booting the flash stick. Follow the steps I gave there to restart and PC and then immediately press the BIOS Boot menu key until it brings up the menu: https://www.sysnative.com/forums/hardware-tutor...
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.