Hello everyone,
I’ve always wondered where this four programs are located, because there are not available on hard drive, but there are first programs which pc notices while starting up. My guess is ROM, but not sure. I suppose there are more chips on which are this programs located?
In: 4
There’s an EPROM microchip on the motherboard/main board that is specific for that board. It has a specific BIOS for that chip and board (different boards might have different circuitry, CPU architecture, etc). This is why if you go shopping for motherboard, one of the specs is the type of BIOS.
The first thing BIOS does is execute POST to make sure the main components are working, then it looks at the first partition on each hard drive for a boot loader, which loads the OS.
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