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Chapter 4: BIOS
4-1
Chapter 4
BIOS
4-1 Introduction
This chapter describes the Phoenix BIOS™ Setup utility for the C2SBA+II/
C2SBA+/C2SBA/C2SBE. The Phoenix ROM BIOS is stored in a ash chip and
can be easily upgraded using a oppy disk-based program.
Note: Due to periodic changes to the BIOS, some settings may have been added
or deleted and might not yet be recorded in this manual. Please refer to the Manual
Download area of the Super Micro web site <http://www.supermicro.com> for any
changes to the BIOS not reected in this manual.
System BIOS
The BIOS is the Basic Input Output System used in all IBM
®
PC, XT™, AT
®
, and
PS/2
®
compatible computers. The Phoenix BIOS stores the system parameters,
types of disk drives, video displays, etc. in the CMOS. The CMOS memory re-
quires very little electrical power. When the computer is turned off, a backup battery
provides power to the CMOS logic, enabling it to retain system parameters. Each
time the computer is powered on, the computer is congured with the values stored
in the CMOS logic by the system BIOS, which gains control at boot-up.
HowToChangetheCongurationData
The CMOS information that determines the system parameters may be changed
by entering the BIOS Setup utility. This Setup utility can be accessed by pressing
the <Delete> key at the appropriate time during system boot. (See below.)
Starting the Setup Utility
Normally, the only visible POST (Power On Self Test) routine is the memory test.
As the memory is being tested, press the <Delete> key to enter the main menu
of the BIOS Setup utility. From the main menu, you can access the other setup
screens, such as the Security and Power menus. Beginning with Section 4-3,
detailed descriptions are given for each parameter setting in the Setup utility.
Warning: Do not shut down or reset the system while updating the BIOS
to prevent possible boot failure.