@coolboymew My last ever Mac purchase, I had tons of trouble wiping the drive to install a different OS. It was as if their boot firmware actively tried to prevent it. Anyways, I struggled to find the magic combination of peripherals to be able to do what I wanted.
In the end I needed a special keyboard. For some reason my other keyboard did not work for inputting the key commands for accessing the BIOS???
Such a pain in the ass, never again.