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32 Hardware Maintenance Manual: xSeries 220
checks for a startable diskette in the diskette drive, then checks the hard disk
drive in bay 1, and then checks a network adapter.
If you have the appropriate Ethernet adapter and Wake on LAN software
installed and enabled in the server, the server uses the alternative startup
sequence instead of the primary startup sequence. The default for Wake on LAN
is Disabled.
If the Boot Fail Count choice is enabled, you can restore the BIOS system defaults
after three consecutive boot failures. If this choice is disabled, the BIOS system
defaults can only be loaded from the Configuration/Setup Utility main menu.
You can enable a virus-detection test that checks for changes in the master boot
record at startup. You also can select to run POST in the enhanced mode or the
quick mode.
• Advanced Setup
Select this choice to change values for advanced hardware features, such as cache
control, and PCI configuration.
A message appears above the choices on this menu to alert you that the system
might malfunction if these options are configured incorrectly. Follow the
instructions on the screen carefully.
— Processor Serial Number Access
Select this choice to specify whether the microprocessor serial number in the
microprocessor is readable.
— System Partition Visibility
Select this choice to specify whether the System Partition is visible. To make
the System Partition visible, set this value to Visible. To make the System
Partition invisible, set this value to Hidden. See the ServerGuide CDs
provided with the server for additional information on the System Partition.
— Core Chipset Control
Select this choice to modify settings that control features of the core chip set
on the system board.
Attention: Do not make changes in this option unless directed to do so by an
IBM authorized service representative.
— Cache Control
Select this choice to enable or disable the microprocessor cache. In addition,
you can define the microprocessor cache type as write-back (WB) or write-
through (WT). Selecting write-back mode provides better system
performance.
— Memory Settings
Select this choice to manually disable or enable a bank of memory.
If a memory error is detected during POST or memory configuration, the
server can automatically disable the failing memory bank and continue
operating with reduced memory capacity. If this occurs, you must manually
enable the memory bank after the problem is corrected. Select Memory
Settings from the Advanced Setup menu, use the arrow keys to highlight the
bank that you want to enable; then, use the arrow keys to select Enable.
Note: If a memory error is detected during normal operation, System
Management Interrupt (SMI) can disable the memory.
— PCI Bus Control
Note: If the optional system management adapter is installed in your server,
this feature is disabled; in this case, the PCI Bus Control choice is not
available on the Configuration/Setup Utility menu.