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4-1
Introduction
This chapter describes the Phoenix BIOS™ Setup utility for the X7DWE. Phoenix
ROM BIOS is stored in a fl ash chip and can be easily upgraded using a fl oppy
disk-based or a USB fl ash drive-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 Supermicro website <http://www.
supermicro.com> for any changes to the BIOS that may not be refl ected
in this manual.
System BIOS
The BIOS is the Basic Input Output System used in all IBM
PS/2
compatible computers. The Phoenix BIOS utility stores the system param-
®
eters, types of disk drives, video displays, etc. in the CMOS. 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. When
the computer is powered on, the computer is confi gured with the values stored in
the CMOS Logic by the system BIOS, which gains control at boot up.
How To Change the Confi guration Data
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. 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 BIOS to
prevent possible boot failure.
Chapter 4
BIOS
4-1
Chapter 4: BIOS
®
PC, XT™, AT
®
, and
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