I am a Computer Hardware professional. I started working with computer technology in the early eighties. I have seen the evolution of technology starting with closed platforms like the game console era and then the move toward open platforms like the Home Computer Golden Age. In the last 5 or 10 years, I have witnessed technology changes that are slowly moving away from open hardware designs towards hardware that is locked down and can’t be modified by the user.
That sounds like a nightmare to manage and keep up to date. I would consider using VMs or some other method instead of trying to multiboot dozens of OSes across different physical drives and devices.