IBM HS20 User Guide - Page 28

Switches, Jumpers - blade servers

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Switches Table 1 describes the function of each switch on the switch block (SW2). Table 1. Switch block (SW2) Switch number Default value Switch description 1 through 7 Off Reserved. 8 Off Power-on password override. Changing the position of this switch bypasses the power-on password check the next time the blade server is turned on and starts the Configuration/Setup Utility program so that you can change or delete the power-on password. You do not have to move the switch back to the default position after the password is overridden. See "Using passwords" on page 46 for additional information about the power-on password. Jumpers When the BIOS code page jumper (J12) is moved from pins 1 and 2 to pins 2 and 3, you can start the blade server from a backup BIOS page. The default position is pins 1 and 2. See the blade server Hardware Maintenance Manual and Troubleshooting Guide on the IBM BladeCenter Documentation CD or the IBM BladeCenter T Documentation CD for complete details. Note: If you start the blade server from the backup page because the primary BIOS page has become damaged, you must flash the primary BIOS code. 14 BladeCenter HS20 Type 8832: Installation and User's Guide

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Switches
Table
1
describes
the
function
of
each
switch
on
the
switch
block
(SW2).
Table
1.
Switch
block
(SW2)
Switch
number
Default
value
Switch
description
1
through
7
Off
Reserved.
8
Off
Power-on
password
override.
Changing
the
position
of
this
switch
bypasses
the
power-on
password
check
the
next
time
the
blade
server
is
turned
on
and
starts
the
Configuration/Setup
Utility
program
so
that
you
can
change
or
delete
the
power-on
password.
You
do
not
have
to
move
the
switch
back
to
the
default
position
after
the
password
is
overridden.
See
“Using
passwords”
on
page
46
for
additional
information
about
the
power-on
password.
Jumpers
When
the
BIOS
code
page
jumper
(J12)
is
moved
from
pins
1
and
2
to
pins
2
and
3,
you
can
start
the
blade
server
from
a
backup
BIOS
page.
The
default
position
is
pins
1
and
2.
See
the
blade
server
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
on
the
IBM
BladeCenter
Documentation
CD
or
the
IBM
BladeCenter
T
Documentation
CD
for
complete
details.
Note:
If
you
start
the
blade
server
from
the
backup
page
because
the
primary
BIOS
page
has
become
damaged,
you
must
flash
the
primary
BIOS
code.
14
BladeCenter
HS20
Type
8832:
Installation
and
User’s
Guide