Sun Microsystems Sun Fire V490 - Manual (Page 193)

Chapter 9 Configuring System Firmware 165
3. Press the front panel Power button twice, with no more than a short, one-second
delay in between presses.
A screen similar to the following is displayed to indicate that you have temporarily
reset OpenBoot configuration variables to their default values:
Note – Once the front panel LEDs stop blinking and the Power/OK LED stays lit,
pressing the Power button again will begin a graceful shutdown of the system.
What Next
During the execution of OpenBoot firmware code, all OpenBoot configuration
variables—including the ones that are likely to cause problems, such as input and
output device settings—are temporarily set to “safe” factory default values. The
only exception to this is auto-boot, which is set to false.
By the time the system displays the ok prompt, OpenBoot configuration variables
have been returned to their original, and possibly misconfigured, values. These
values do not take effect until the system is reset. You can display them with the
printenv
command and manually change them with the setenv command.
If you do nothing other than reset the system at this point, no values are
permanently changed. All your customized OpenBoot configuration variable
settings are retained, even ones that may have caused problems.
Setting NVRAM parameters to default values.
Probing I/O buses
Sun Fire V490, No Keyboard
Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved.
OpenBoot x.x, xxxx MB memory installed, Serial #xxxxxxxx.
Ethernet address x:x:x:x:x:x, Host ID: xxxxxxxx.
System is operating in Safe Mode and initialized with factory
default configuration. No actual NVRAM configuration variables
have been changed; values may be displayed with ’printenv’ and set
with ’setenv’. System will resume normal initialization and
configuration after the next hardware or software reset.
ok