Sun Microsystems V490 Manual Do Utilizador

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

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.