Answer:
Determining what peripheral dives are being used
Step-by-step explanation:
BIOS, in full Basic Input/Output System, a Computer program that is typically stored in EPROM and used by the CPU to perform start-up procedures when the computer is turned on. Its two major procedures are determining what peripheral devices (keyboard, mouse, disk drives, printers, video cards, etc.) are available and loading the operating system (OS) into main memory.
P.S. I would include a link to the website I copied this answer from but it's not letting me.