Sun Microsystems Solaris 7 11/99 Hardware Platform Manual page 84

Sun Ultra 1 and Ultra 2 Systems, Sun Enterprise
450 System, Sun Ultra 450 Workstation
If power to your system was interrupted during updating of the flash PROM,
complete the following steps:
1. Turn the power switch to the Standby position to prevent power surge to the
system when power is restored.
2. After power is restored to the system location, return the power switch to the On
position.
After power is restored, one of the following two recovery scenarios should happen
on your system. Follow the instructions described for the appropriate scenario.
Scenario 1—System Recovers After Power Restoration
If your system attempts to autoboot after power is restored, you must complete the
flash PROM updating process.
Scenario 2—System Does Not Recover After Power
Restoration
If your system does not boot, run diagnostics, or return to the PROM monitor's ok
prompt after power is restored, complete the following steps:
1. If the update was being run via a serial port and the system also has a frame
buffer and keyboard installed, or if the system has a keyboard and more than one
frame buffer installed:
a. Connect a monitor to each frame buffer.
b. Confirm that output has been redirected to one of the frame buffers.
The NVRAM configuration variables might have been modified because of the
firmware update just before power was lost. If this happened, then the system
output was possibly redirected to a device other than the one originally used to
display it. This could only have happened if a keyboard was connected to the
system.
If there is no keyboard connected to the system and the NVRAM configuration
variables are set to their default values, then system input and output are directed
to serial port A.
72 Solaris 7 11/99 Sun Hardware Platform Guide • November 1999