Can you expand on this, please?
I’ve been trying to install Proxmox on my NUC8i5 from a USB stick with the Proxmox iso image, prepared using Etcher, and getting an error when it starts to boot:
“Image Authorization Fail, System cannot boot to this device due to Security Violation.”
When you mention ‘putting the USB back to legacy’, how did you do that? Is it something you did to the USB stick, or something in the bios during the boot process?
This might just be the bit I’m missing!