Clearing Cmos; Using The Front Panel - Sun Microsystems Sun Fire V60x Manual

Caution – As shipped, the Sun Fire V60x and Sun Fire V65x servers do not have
Advanced Configuration and Power (ACPI) enabled. As a result, the front panel
power switch operates as a normal power switch. In this configuration, press the
switch once and power comes on; press again and the power goes off. It is
recommended that you use the standard shutdown command before you power
down the system using the switch. Activate the front panel switch to remove power
only when the OS (for example, Linux) has completed the shutdown process and has
halted.
Should you elect to use an ACPI-enabled Linux kernel and run the ACPI daemon
(acpid), the behavior of the front panel switch will change to support the standard
"soft-off" capability. That is, when the server is on and the power switch is pressed,
the OS is notified and begins a graceful shutdown.
Additionally, with ACPI enabled and the server on, pressing the power button for
longer than four seconds forces an immediate (non-graceful) shutdown.
Note that the Solaris OS does not support ACPI.
4.4

Clearing CMOS

It may be necessary to clear CMOS memory in order to restore the default BIOS
passwords required to boot the server (user) or access setup functions (supervisor),
as well as the default BIOS settings.
The CMOS configuration RAM may be reset by one of two methods:
The CMOS clear button sequence from the front panel.
■
The Clear CMOS jumper located on the baseboard
■
The CMOS can also be set to a default setting through the BIOS Setup. It will
automatically be reset if it becomes corrupted.
4.4.1

Using the Front Panel

Follow these steps to clear the CMOS using the buttons on the front panel:
1. Power off the system, but leave the AC power connected so the 5V standby is
available.
2. Verify that the Clear CMOS jumper is in the "not clear" position.
4-6 Sun Fire V60x and Sun Fire V65x Servers—Troubleshooting Guide • November 2003