Lenovo PC 300PL Using your Personal Computer - PC300PL - 6562 - Page 61

Enhanced Security

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See Installing Options in Your Personal Computer for instructions on removing the computer cover and moving jumpers. Refer to the system board label inside the computer cover for the location of the CMOS Clear (password) jumper. Important If you move the CMOS-clear jumper, the Configuration/Setup Utility program will load the default settings. If you do not want to use the default settings, use the Configuration/Setup Utility program to reconfigure the computer and to set a new password. Enhanced Security By default, your administrator password is stored in CMOS memory. CMOS memory is battery-powered memory that stores your configuration, setup, and security settings. The information stored in CMOS remains there for the life of the battery, as long as the battery is not removed. Your computer has a new, enhanced security feature that provides extra protection for your administrator password, as well as your startup (boot) sequence settings. With enhanced security, your administrator password and boot sequence are stored in a highly-protected, nonvolatile, security EEPROM module that is separate from CMOS memory and the EEPROM module that stores system programs. (Refer to "System Programs" on page 26 for information on system programs.) When your administrator password and boot sequence are locked in the security EEPROM, they remain intact even if the battery in your computer expires or is removed by someone. Enhanced security can only be enabled or disabled when you update system programs. The procedure for enabling enhanced security is explained under "Enabling and Disabling Enhanced Security" on page 48. If enhanced security is enabled and you have not set an administrator password, your computer will operate as if enhanced security were disabled. If enhanced security is enabled and you have set an administrator password, your computer will operate as follows: The contents of the security EEPROM (your administrator password and boot sequence) will be protected from failure of the battery and CMOS memory. The security EEPROM will be protected from unauthorized access because it locks after your computer is turned on and the system programs have completed their startup routine. Once it is locked, the security EEPROM cannot be read from or written to by any software application or system software until Chapter 4. Configuring Your Computer. 47

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See
Installing Options in Your Personal Computer
for instructions on removing the
computer cover and moving jumpers.
Refer to the system board label inside the
computer cover for the location of the CMOS Clear (password) jumper.
Important
If you move the CMOS-clear jumper, the Configuration/Setup Utility program
will load the default settings.
If you do not want to use the default settings, use
the Configuration/Setup Utility program to reconfigure the computer and to set
a new password.
Enhanced Security
By default, your administrator password is stored in CMOS memory.
CMOS
memory is battery-powered memory that stores your configuration, setup, and
security settings.
The information stored in CMOS remains there for the life of the
battery, as long as the battery is not removed.
Your computer has a new, enhanced security feature that provides extra protection
for your administrator password, as well as your startup (boot) sequence settings.
With enhanced security, your administrator password and boot sequence are stored
in a highly-protected, nonvolatile, security EEPROM module that is separate from
CMOS memory and the EEPROM module that stores system programs.
(Refer to
“System Programs” on page
26 for information on system programs.)
When your
administrator password and boot sequence are locked in the security EEPROM, they
remain intact even if the battery in your computer expires or is removed by
someone.
Enhanced security can only be enabled or disabled when you update system
programs.
The procedure for enabling enhanced security is explained under
“Enabling and Disabling Enhanced Security” on page
48.
If enhanced security is enabled and you have not set an administrator password,
your computer will operate as if enhanced security were disabled.
If enhanced
security is enabled and you have set an administrator password, your computer will
operate as follows:
±
The contents of the security EEPROM (your administrator password and boot
sequence) will be protected from failure of the battery and CMOS memory.
±
The security EEPROM will be protected from unauthorized access because it
locks after your computer is turned on and the system programs have
completed their startup routine.
Once it is locked, the security EEPROM cannot
be read from or written to by any software application or system software until
Chapter
4.
Configuring Your Computer.
47