Technical data

Procedures for Booting and Resetting nPartitions
Configuring Boot Paths and Boot Actions
HP System Partitions Guide: Administration for nPartitions—rp7410
EMSP—[e-mail]
179
Configuring Boot Paths and Boot Actions
You can configure each nPartition’s boot paths (device paths for booting
HP-UX) and boot actions (preferred automatic boot behavior) by using
the following methods:
• BCH on page 181
This procedure (BCH Main menu PATH command, and Configuration
menu PATHFLAGS command) configures an nPartition’s boot paths
and boot actions (path flags) through its BCH interface.
• HP-UX Commands on page 182
This procedure (parmodify -p#... and setboot... commands) sets
nPartition boot path variables from HP-UX and enables you to check
and set the local partition’s PRI boot action (the PRI path flag).
By configuring boot paths and boot actions for an nPartition, you can set
the partition to automatically boot from a primary source or, if the
primary source fails, from backup devices.
Each nPartition’s boot device paths list the hardware paths of devices
for booting HP-UX on the nPartition.
The boot paths are:
• PRI—Primary boot path.
• HAA—High-availability alternate boot path, typically a mirror of the
primary root volume.
• ALT—Alternate boot path. Typically used for install or recovery
media (such as DAT or CD-ROM drive).
Each nPartition also has a set of boot actions (path flags), which
specify the default actions to be automatically performed when the
partition boots to the BCH interface. Each of the three boot paths (PRI,
HAA, and ALT) has its own path flag setting that defines its boot action.
The order in which an nPartition’s boot actions are attempted is: PRI
boot action, then HAA boot action (if necessary), and finally ALT boot
action (if necessary).
The boot actions (path flag settings) for each boot path are:
• 0—Go to BCH.
HP Restricted / DRAFT
DRAFT NOV 2001