Is the BIOS included in the OS or not?

Is the BIOS included in the OS or not?

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answers (2)

Answer 1
May, 2021

BIOS lies in the memory of the microcircuit on the motherboard, and has nothing to do with the OS. Its task is to find the desired partition and sector on the drive, and configure the boot loader, which is registered in this sector. The boot loader then gives the user the choice of which OS to boot (or boots the system by default).

BIOS is now being superseded by the new EFI, which has a more advanced disk layout and provides more options to the hardware manufacturer (for example, the ability to embed subroutines directly into the channel between the drive and the OS).

Answer 2
May, 2021

No, BIOS is not related to operating systems. The BIOS boots BEFORE the operating system and chooses which operating system to load (if there are many) and which resources to provide to the selected operating system. The OS will not work without it.

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