Intel SC450NX Product Guide - Page 33

Using BIOS Setup, Record Your Setup Settings, If You Cannot Access Setup, Starting Setup

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Using BIOS Setup This section describes the BIOS Setup options. Use Setup to change the system configuration defaults. You can run Setup with or without an OS being present. Setup stores most of the configuration values in battery-backed CMOS; the rest of the values are stored in flash memory. The values take effect when you boot the system. POST uses these values to configure the hardware; if the values and the actual hardware do not agree, POST generates an error message. You must then run Setup to specify the correct configuration. Run Setup: you can run Setup to modify any standard PC-AT† baseboard feature such as: • Select diskette drive • Select parallel port • Select serial port • Set time/date (to be stored in RTC) • Configure IDE hard drive • Specify boot device sequence • Enable SCSI BIOS Run SSU, not Setup: you must run the SSU instead of Setup to do the following: • Enter or change information about a board • Alter system resources (e.g., interrupts, memory addresses, I/O assignments) to user-selected choices instead of choices selected by the BIOS resource manager Record Your Setup Settings If the default values ever need to be restored (after a CMOS clear, for example), you must run Setup again. Referring to the worksheets could make your task easier. If You Cannot Access Setup If the diskette drive is misconfigured so that you cannot access it to run a utility from a diskette, you might need to clear CMOS memory. You must open the system, change a jumper setting, use Setup to check and set diskette drive options, and change the jumper back. For a step-by-step procedure, see "CMOS Clear Jumper" on page 152. Starting Setup You can enter and start Setup under several conditions: • When you turn on the system, after POST completes the memory test • When you reboot the system by pressing while at the DOS operating system prompt • When you have moved the CMOS jumper on the baseboard to the "Clear CMOS" position (enabled); for a step-by-step procedure, see "CMOS Clear Jumper" on page 152. 33

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33
Using BIOS Setup
This section describes the BIOS Setup options.
Use Setup to change the system configuration
defaults.
You can run Setup with or without an OS being present.
Setup stores most of the
configuration values in battery-backed CMOS; the rest of the values are stored in flash memory.
The values take effect when you boot the system.
POST uses these values to configure the
hardware; if the values and the actual hardware do not agree, POST generates an error message.
You must then run Setup to specify the correct configuration.
Run Setup:
you can run Setup to modify any standard PC-AT
†
baseboard feature such as:
•
Select diskette drive
•
Select parallel port
•
Select serial port
•
Set time/date (to be stored in RTC)
•
Configure IDE hard drive
•
Specify boot device sequence
•
Enable SCSI BIOS
Run SSU, not Setup:
you must run the SSU instead of Setup to do the following:
•
Enter or change information about a board
•
Alter system resources (e.g., interrupts, memory addresses, I/O assignments) to user-selected
choices instead of choices selected by the BIOS resource manager
Record Your Setup Settings
If the default values ever need to be restored (after a CMOS clear, for example), you must run
Setup again.
Referring to the worksheets could make your task easier.
If You Cannot Access Setup
If the diskette drive is misconfigured so that you cannot access it to run a utility from a diskette,
you might need to clear CMOS memory.
You must open the system, change a jumper setting, use
Setup to check and set diskette drive options, and change the jumper back.
For a step-by-step
procedure, see “CMOS Clear Jumper” on page 152.
Starting Setup
You can enter and start Setup under several conditions:
•
When you turn on the system, after POST completes the memory test
•
When you reboot the system by pressing <Ctrl+Alt+Del> while at the DOS operating system
prompt
•
When you have moved the CMOS jumper on the baseboard to the “Clear CMOS” position
(enabled); for a step-by-step procedure, see “CMOS Clear Jumper” on page 152.