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CHAPTER
9
Configuring System Firmware
This chapter describes OpenBoot firmware commands and configuration variables
available for configuring the following aspects of Sun Fire V490 system behavior:
■ OpenBoot environmental monitoring
■ Automatic system recovery (ASR)
In addition, this chapter provides information about keyboard commands and
alternative methods for performing OpenBoot emergency procedures.
Tasks covered in this chapter include:
■ “How to Enable OpenBoot Environmental Monitoring” on page 154
■ “How to Disable OpenBoot Environmental Monitoring” on page 154
■ “How to Obtain OpenBoot Environmental Status Information” on page 155
■ “How to Enable the Watchdog Mechanism and Its Options” on page 156
■ “How to Enable ASR” on page 157
■ “How to Disable ASR” on page 158
■ “How to Obtain ASR Status Information” on page 158
■ “How to Redirect the System Console to the System Controller” on page 159
■ “How to Restore the Local System Console” on page 161
■ “How to Deconfigure a Device Manually” on page 162
■ “How to Reconfigure a Device Manually” on page 163
■ “How to Implement Stop-N Functionality” on page 164
Note – Many of the procedures in this chapter assume that you are familiar with the
OpenBoot firmware and that you know how to enter the OpenBoot environment.
For background information, see “About the ok Prompt” on page 49. For
instructions, see “How to Get to the ok Prompt” on page 126.