I-Chan· Premium Member
I think you are mixing concepts. The bios starts the system as it is. When you turn the system on, it's hardwired to boot to the bios. The bios initializes devices on the system and has the method for starting it, be it launch a part of itself as gui (like in most consoles), or look in a predesignated area of memory to load the OS (like in pc, looking in the boot device's system block). Afterwards, you may or may not use the methods provided by the bios to access the system components, but the bios must be there. And in consoles, most of the times the bios procedures are used.