What is the boot sequence of an HP UX system?

Answer 1

Boot Sequence:
1] Poweron.
2] PDC Activates and checks for CPU and memory and other peripheral connected to it.
3] Checks if AUTOBOOT Flag is on. If yes , its try to locate the Primary boot path.
4] And loads Initial system loader , from Primary boot path.
5] ISL Loads the secondery loader called hp-ux.
6] hpux loads the kernel /stand/vmunix
7] kernel starts first process swapper , and then init
8] Shell /sbin/pre_init_rc executes .
9] init locates /etc/inittab
10] /etc/inittab starts the system the default run level , mentioned with "initdefault" parameter.
11] Then executes /sbin/bcheckrc and activates LVM ,

it does following :

1) activates LVM (if appplicable).
# 2) runs eisa_config in automatic mode
# (if applicable).
# 3) checks the file systems before mounting.
# (the scripts required for file system specific
# checking reside in /sbin/fs//bcheckrc)
# 4) and anything else that should be done before
# mounting any file systems.
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It checks for the file /sbin/lvmrc and , /etc/lvmrc activates the LVM , if AUTO_VG_ACTIVATE=1 mentioned.

12 ]Then it spawns getty process ,
cons:123456:respawn:/usr/sbin/getty console console
And it gives login : prompt.

Raj