Lenovo ThinkPad T420 (English) BIOS Setup using Windows Management Instrumenta - Page 22

Restoring, default, settings, Changing, existing, hardware, password, Limitations - 14 1

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Restoring default settings To restore default BIOS settings, use the Lenovo_LoadDefaultSettings class, then use the Lenovo_SaveBiosSettings class to save the BIOS changes (see sample scripts). Changing an existing hardware password To update a password, specify a password type and format the password. The format for password parameters is "pop,abc,def,ascii,us" with descriptions in Password parameters format, changing existing hardware password (see "Set a supervisor password on the local computer when a supervisor password exists" on page 22 and "Set a supervisor password on a remote computer when a supervisor password exists" on page 23 for sample scripts). Table 5. Password parameters format, changing existing hardware password Parameter Description Possible selections Parameter 1 Password type string • "pap": Supervisor • "POP": Power-on • "uhdp1": User HDP 1 • "mhdp1": Master HDP 1 • "uhdp2": User HDP 2 • "mhdp2": Master HDP 2 • "uhdp3": User HDP 3 • "mhdp3": Master HDP 3 Parameter 2 Current password string • "abc" - raw ascii character • "1e302e" - scancode Parameter 3 New password string • Raw ascii "def" • Scan code "201221" Parameter 4 Password encoding • "ascii" • "scancode" Parameter 5 Keyboard languages • "us" - English US, English UK, Chinese-Traditional, Danish, Dutch, French-Canadian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Spanish-European, Spanish-Latin American, Swiss, Turkish • "fr" - French-European, Belgian • "gr" - German, Czech, Slovak, Slovenian Limitations The following WMI limitations exist for BIOS setup: • BIOS settings cannot be changed at the same boot as power-on passwords (POP) and hard disk passwords (HDP). If you want to change BIOS settings and POP or HDP, you must reboot the system after changing one of them. • A password cannot be set using this method when one does not already exist. Passwords can only be updated or cleared. 14 Lenovo BIOS Setup using Windows Management Instrumentation Deployment Guide

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Restoring
default
settings
To
restore
default
BIOS
settings,
use
the
Lenovo_LoadDefaultSettings
class,
then
use
the
Lenovo_SaveBiosSettings
class
to
save
the
BIOS
changes
(see
sample
scripts).
Changing
an
existing
hardware
password
To
update
a
password,
specify
a
password
type
and
format
the
password.
The
format
for
password
parameters
is
"pop,abc,def,ascii,us"
with
descriptions
in
Password
parameters
format,
changing
existing
hardware
password
(see
“Set
a
supervisor
password
on
the
local
computer
when
a
supervisor
password
exists”
on
page
22
and
“Set
a
supervisor
password
on
a
remote
computer
when
a
supervisor
password
exists”
on
page
23
for
sample
scripts).
Table
5.
Password
parameters
format,
changing
existing
hardware
password
Parameter
Description
Possible
selections
Parameter
1
Password
type
string
•
“pap":
Supervisor
•
“POP":
Power-on
•
"uhdp1":
User
HDP
1
•
"mhdp1":
Master
HDP
1
•
"uhdp2":
User
HDP
2
•
"mhdp2":
Master
HDP
2
•
"uhdp3":
User
HDP
3
•
"mhdp3":
Master
HDP
3
Parameter
2
Current
password
string
•
“abc”
- raw
ascii
character
•
“1e302e”
- scancode
Parameter
3
New
password
string
•
Raw
ascii
"def"
•
Scan
code
"201221"
Parameter
4
Password
encoding
•
“ascii”
•
“scancode”
Parameter
5
Keyboard
languages
•
"us"
- English
US,
English
UK,
Chinese-Traditional,
Danish,
Dutch,
French-Canadian,
Italian,
Japanese,
Korean,
Norwegian,
Polish,
Portuguese,
Spanish-European,
Spanish-Latin
American,
Swiss,
Turkish
•
"fr"
- French-European,
Belgian
•
"gr"
- German,
Czech,
Slovak,
Slovenian
Limitations
The
following
WMI
limitations
exist
for
BIOS
setup:
•
BIOS
settings
cannot
be
changed
at
the
same
boot
as
power-on
passwords
(POP)
and
hard
disk
passwords
(HDP).
If
you
want
to
change
BIOS
settings
and
POP
or
HDP,
you
must
reboot
the
system
after
changing
one
of
them.
•
A
password
cannot
be
set
using
this
method
when
one
does
not
already
exist.
Passwords
can
only
be
updated
or
cleared.
14
Lenovo
BIOS
Setup
using
Windows
Management
Instrumentation
Deployment
Guide