HP-UX boot guide
HP-UX
Normal Boot
The bootstrap process involves the execution of three software components:
pdc
Automatic boot processes on various HP-UX systems follow similar general
sequences. When power is applied to the HP-UX system processor, or the
system Reset button is pressed, the firmware processor-dependent code (
pdc)
is executed to verify hardware and general system integrity. After checking
the hardware,
pdc gives the user the option to override
the autoboot sequence by pressing the
Esc key. A message
resembling the following usually appears on the console.
(c) Copyright. Hewlett-Packard Company. 1994.
All rights reserved.
PDC ROM rev. 130.0
32 MB of memory configured and tested.
Selecting a system to boot.
To stop selection process, press and hold the ESCAPE key...
If no keyboard activity is detected,
pdc commences the
autoboot sequence by loading
isl and transferring control
to it.
isl
The initial system loader (
isl) implements the operating-system-independent
portion of the bootstrap process. It is loaded and executed after self-test
and initialization have completed successfully. Typically, when control
is transferred to
isl, an autoboot sequence takes place.
An autoboot sequence allows a complete bootstrap operation to occur with
no intervention from an operator. While an autoboot sequence occurs,
isl
finds and executes the autoexecute file which requests that
hpux
be run with appropriate arguments. Messages similar to the following are
displayed by
isl on the console:
Booting from: scsi.6 HP 2213A
Hard booted.
ISL Revision A.00.09 March 27, 1990
ISL booting hpux boot disk(;0)/stand/vmunix
hpux
hpux, the secondary system loader, then announces the operation
it is performing, in this case the boot operation, the device file from
which the load image comes, and the TEXT size, DATA size, BSS size, and
start address of the load image, as shown below, before control is passed
to the image.
Booting disk(scsi.6;0)/stand/vmunix
966616 397312 409688 start 0x6c50
Finally, the loaded image displays numerous configuration and status messages,
and passes control to the
init process.
Single-user Boot
A single-user boot in HP-UX is sometimes referred to as an interactive
boot or attended mode boot. Pressing the
Escape key at
the boot banner on an older Series 700 workstation halts the automatic
boot sequence, puts you into attended mode, and displays the
Boot Console
User Interface main menu, a sample of which is below.
Selecting a system to boot.
To stop selection process, press and hold the ESCAPE key.
Selection process stopped.
Searching for Potential Boot Devices.
To terminate search, press and hold the ESCAPE key.
Device Selection Device Path Device Type
-------------------------------------------------------------
P0 scsi.6.0 QUANTUM PD210S
P1 scsi.1.0 HP 2213A
P2 lan.ffffff-ffffff.f.f hpfoobar
b) Boot from specified device
s) Search for bootable devices
a) Enter Boot Administration mode
x) Exit and continue boot sequence
Select from menu:
In this case the system automatically searches the SCSI, LAN, and EISA
interfaces for all potential boot devices-devices for which boot I/O code
(IODC) exists. The key to booting to single-user mode is first to boot
to ISL using the
b) option. The ISL is the program that
actually controls the loading of the operating system. To do this using
the above as an example, you would type the following at the
Select
from menu: prompt:
Select from menu: b p0 isl
This tells the system to boot to the ISL using the SCSI drive at address
6 (since the device path of P0 is
scsi.6.0). After displaying a
few messages, the system then produces the ISL> prompt.
Pressing the Escape key at the boot banner on newer
Series 700 machines produces the Boot Administration Utility, as shown
below.
Command Description
------- -----------
Auto [boot|search] [on|off] Display or set auto flag
Boot [pri|alt|scsi.addr][isl] Boot from primary, alt or SCSI
Boot lan[.lan_addr][install][isl] Boot from LAN
Chassis [on|off] Enable chassis code
Diagnostic [on|off] Enable/disable diag boot mode
Fastboot [on|off] Display or set fast boot flag
Help Display the command menu
Information Display system information
LanAddress Display LAN station addresses
Monitor [type] Select monitor type
Path [pri|alt] [lan.id|SCSI.addr] Change boot path
Pim [hpmc|toc|lpmc] Display PIM info
Search [ipl] [scsi|lan [install]] Display potential boot devices
Secure [on|off] Display or set security mode
-----------------------------------------------------------------
BOOT_ADMIN>
To display bootable devices with this
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