4-2 Setting System Parameters
System configuration information is stored in nonvolatile
memory. A nonvolatile memory device retains its data when
system power is turned off. Nonvolatile memory in your
system is a complementary metal-oxide semiconductor
(CMOS) chip backed up by a battery on the system board.
The battery supplies continuous power to CMOS memory
and maintains configuration information when system
power is off (see “Replacing the CMOS Battery ” in
Chapter 8).
NOTE
NECCSD recommends that you print out or
write down your current Setup parameters and store
the information in a safe place. This lets you restore
your system to the current parameters if you ever
need to replace the battery.
When to Use Setup
The Setup utility lets you view and set system parameters.
Use the Setup utility program to
set the time and date.
update or check system parameters when you add or
remove expansion options.
change or set power management features.
correct a hardware discrepancy when the Power-On
Self-Test (POST) displays an error message and
prompts you to run Setup.
check the installation of optional memory by comparing
the amount of memory installed with the amount of
memory displayed by Setup.
change certain system operating parameters, such as
boot device sequence and keyboard parameters.
