Managing Superdome Complexes: A Guide for HP-UX System Administrators

Booting and Resetting Superdome Partitions
Overview of Partition Booting Concepts and Issues
Chapter 5234
6. Initial System Loader (ISL) and Secondary System
Loader (hpux)
In most situations you need not use the ISL and hpux interfaces.
However, when using the BCH interface’s BO (boot) command you can
select to stop at the ISL prompt to perform more detailed booting
tasks. For example, you can use the ISL interface to boot HP-UX in
single-user or LVM-maintenance mode, or to boot an HP-UX kernel
other than /stand/vmunix.
7. HP-UX Operating System
The HP-UX operating system boots on a partition once ISL and the
Secondary System Loader (hpux) specify which kernel is to be booted.
Normally the /stand/vmunix kernel is selected.
While all of a partition’s cells go through their individual self tests, only
the core cell is active until HP-UX is booted.