After several improvements on this idea, today we have the Electrically Erasable Programmable Read Only Memory (EEPROM).
Now when you want to add something to a computer that isn't supported in BIOS, we simply electrically erase the old data, and insert new data to support your new toy. This process is called Flashing, or Flashing the BIOS.
Due to this 'little challenge', in addition to the fact that some viruses (destructive code) have been written to attack BIOS, motherboard manufacturers such as Gigabyte are looking at a second BIOS that backs up the first BIOS.
At this point, your computer has a 'personality' (the BIOS) and CMOS entries to tell it what it has.
It is time to review what happens when you first turn your computer on.
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