Setup Overview
See the following sections for a description of BIOS Setup, when you need to change BIOS settings, and how to start and use BIOS Setup.
What is Setup?
Setup is a utility that allows you to set up the system hardware. Settings for PCI Bridges and devices that connect with the system are included. Setup is incorporated in the BIOS, and can be executed without any dedicated utility disk.
In most cases, you do not have to use Setup because the settings for it have already been optimized prior to the system being shipped. However, you can use Setup for the cases described in the next section.
When You Should Change the Settings
Start Setup and change the settings in the following cases:
!Some setting errors exist.
!Settings of CMOS and/or NVRAM are cleared.
Two types of NVRAM exist: NVRAM for BIOS and NVRAM for SPFW. The NVRAM above is the one for the BIOS.
!Adding or deleting a boot device.
!The BIOS version has changed.
!The Host Bus Bridge (HBB) configuration has changed.
You can also perform the following:
!Set and/or change the date/time setting.
!Set and/or change the interrupt setting of the standard I/O (for example: serial port, mouse).
!Set and/or change the serial console redirection.
!Set and/or change the resource reservation for online maintenance support.
Some Setting Errors Exist
The settings for Setup are stored in nonvolatile memory (CMOS and NVRAM). If the settings in CMOS and/or NVRAM are lost, the BIOS initializes the settings and restarts the system. If a CMOS/NVRAM error is detected, check the status of the error by looking at the BIOS Event Log in iSP. *
*Log description "0251 System CMOS checksum bad - Default configuration used" "910F System NvRAM checksum bad - Default configuration used"
