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When you access the ok prompt from a functioning server, you are suspending the
Solaris OS and placing the system under firmware control. Any processes that were
running under the operating system are also suspended, and the state of such processes
might not be recoverable.
After a manual system reset the system can be configured to boot automatically if
the OpenBoot auto-boot? configuration variable is set to true. See
"System
Console OpenBoot Configuration Variable Settings" on page
23. If the server begins
to boot automatically after a reset, you must abort the boot with the ALOM CMT
break command or perform a graceful shutdown of the Solaris operating system
once the boot has completed.
The commands you run from the ok prompt have the potential to affect the state of
the system. This means that it is not always possible to resume execution of the
operating system from the point at which it was suspended. Although the go
command will resume execution in most circumstances, in general, each time you
drop the system down to the ok prompt, you should expect to have to reboot the
system to get back to the operating system.
For More Information about OpenBoot Firmware
For more information about the OpenBoot firmware, refer to the OpenBoot 4.x
Command Reference Manual. An online version of the manual is included with the
OpenBoot Collection AnswerBook that ships with Solaris software.
Getting to the ok Prompt
This procedure provides several ways of reaching the ok prompt. For details about
when to use each method, see
"OpenBoot ok Prompt" on page
18.
Caution – Forcing the server to the ok prompt suspends all application and
operating system software. After you issue firmware commands and run firmware-
based tests from the ok prompt, the system might not be able to resume where it left
off.
If at all possible, back up system data before starting this procedure. Also exit or
stop all applications and warn users of the impending loss of service. For
information about the appropriate backup and shutdown procedures, see Solaris
system administration documentation.
Chapter 1 Configuring the System Console
21
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