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Chaper 4
BIOS Setup
• BIOS stands for Basic Input and Output System. It is sometimes called
ROM BIOS because it is stored in a Read-Only Memory(ROM) chip on
the mainboard. BIOS is the first program to run when you turn on your
computer.
• BIOS performs the following functions:
1. Initializing and testing hardware in your computer (a process called
"POST", for Power On Self Test).
2. Loading and running your operating system.
3. Helping your operating system and application programs to manage
your PC hardware by means of a set of routines called BIOS Run-Time
Service.
This chapter contains the following topics :
4-1 What Is BIOS Setup
4-2 How To Run BIOS Setup
4-3 What Is CMOS
4-4 What Is POST
4-5 BIOS Upgrade
4-6 BIOS Setup
THE BIOS
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Chapter 4 BIOS Setup
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