> First, there is no unified boot- and device initialisation-standard. There is. UEFI + ACPI. > So you cannot just put in a bootable USB stick and expect it t

> First, there is no unified boot- and device initialisation-standard. There is. UEFI + ACPI. > So you cannot just put in a bootable USB stick and expect it to work. That's how it works today for Arm servers. Windows on Arm platforms also use UEFI + ACPI, and ship with the bootloader unlocked.