Installation guide

Booting the System
3-16 Fault Tolerant System Administration (R1004H) HP-UX version 11.00.03
Booting the System
Your choice of how to boot the system depends on the state of the machine. In
general, there are three states from which you need to initiate the boot process, as
described in Table 3-7.
Depending on the system state and method used to invoke a reboot, the system
does one of the following:
■ If you use a standard command (shutdown -r, reboot, or SAM) to initiate a
reboot, the system reboots normally using the same boot device used for the
current session. (It does not check the console controller path partition nor
prompt you about invoking a manual boot).
■ If you use a console command (boot_auto, boot_manual, reset_bus,
hpmc_reset, or restart_cpu) to initiate a reboot, the system goes to the
PROM level, reads the console controller path partition, and boots from the
device specified in the path partition (or goes to a manual boot if no boot
device is defined).
Table 3-7. Booting Options
Machine State Booting Method
no power If the system is not powered because the power source
was interrupted (or if this is the initial power-on),
regaining power initiates the boot process. The only
way to deliberately power off the system is to turn off
the power switches; turning the switches back on
initiates the boot process.
system powered but
not functioning
If the system is powered but not functioning (because
of a hang or panic or other problem), you can initiate
the boot process by entering an appropriate console
command (see “Issuing Console Commands”).
system active but
needs to be
reconfigured
If the system is active but you want to reboot (for
example, to reconfigure the kernel), you can reboot by
entering the shutdown -r or reboot commands (see
“Rebooting the System”), or you can reboot through
the SAM utility (see “Using SAM”).