take effect when the system is booted. POST uses these values to configure the hardware. If the values and
the actual hardware do not agree, POST generates an error message.
Record your BIOS setup settings. If default values ever need restoring (after a CMOS clear, for example),
you must run BIOS setup again. Your record will make this much easier.
If BIOS Setup is Inaccessible
If you are not able to access BIOS setup, you might need to clear the CMOS memory. Clear CMOS by
pressing the reset button and hold it down for five seconds or more, and then, while holding the reset button
down, press the power button for five seconds. Release both buttons at the same time.
Starting BIOS Setup
You can enter and start BIOS Setup under several conditions:
•
When you turn on the server, after POST completes the memory test
•
When you have performed a CMOS clear (press reset and power buttons as described above).
Under either of these two conditions, after rebooting, you will see this prompt:
Press <F2> to enter SETUP
•
Under a third condition, when CMOS/NVRAM has been corrupted, you will see other messages but not
the F2 prompt:
Warning: CMOS checksum invalid
Warning: CMOS time and date not set
In this condition, the BIOS will load default values for CMOS and attempt to boot.
BIOS Setup Menus
Each BIOS setup menu page contains a number of features. Except those used for information purposes,
each feature is associated with a value field that contains user-selectable parameters. Parameters may be
changed depending upon the security option chosen. If a value is not changeable due to insufficient security
privileges (or other reasons), the feature's value field becomes inaccessible.
The bottom portion of the BIOS Setup screen provides a list of commands that are used for navigating the
setup utility.
Table 4-6.
Keyboard Commands
Press
← →
The left and right arrow keys are used to move between the major menu pages. The keys have
no effect if a submenu or pick list is displayed.
↑
Select Item up—The up arrow is used to select the previous value in a menu item's option list,
or a value field pick list. Pressing the Enter key activates the selected item.
↓
Select Item down—The down arrow is used to select the next value in a menu item's option
list, or a value field pick list. Pressing the Enter key activates the selected item.
–
Change Value—The minus key or the F5 function key is used to change the value of the
current item to the previous value. This key scrolls through the values in the associated pick
list without displaying the full list.
+
Change Value—The plus key or the F6 function key is used to change the value of the current
menu item to the next value. This key scrolls through the values in the associated pick list
42
Description
Chapter 4