IBM PC 300PL Types 6862, Инструкция по использованию

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the computer is turned off and back on again. In a networking environment,
this might prevent certain functions from being performed remotely on your
computer.
There is an extra measure of protection for the system programs in your
computer. Normally, the entire content of the system programs EEPROM is
write-protected with a soft lock. A soft lock allows the POST/BIOS update
utility to function in a network environment. Enhanced security adds a hard
lock. This means that after your computer is turned on and the system
programs startup routine is completed, the POST/BIOS update utility is locked
and cannot be unlocked until the computer is turned off and back on again and
the administrator password is entered. Note that, in a networking environment,
this prevents the system programs in your PC from being updated remotely.
Someone must be present at your computer to turn it on and off in order to
unlock the POST/BIOS update utility.
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A chassis-intrusion feature will alert you if the cover of your computer has been
removed. This feature will work if your computer is on or off when the cover
is removed. If the cover has been removed, a prompt for your administrator
password will appear on the screen, and your PC will remain in a halted state
until your administrator password is entered.
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As with nonenhanced security, your configuration settings are protected. The
settings cannot be changed in the Configuration/Setup Utility program until
your administrator password is entered. This means that any changes in
computer hardware that are detected by the system programs in your computer,
such as removal of a memory DIMM, will generate a configuration error until
the administrator password is entered.
Enabling and Disabling Enhanced Security
Enhanced security can be enabled or disabled only when you update the system
programs in your PC.
To enable or disable enhanced security:
1. Insert a system programs update diskette into drive A of your computer.
System programs updates are available on the World Wide Web. (Refer to
“System Programs” on page 26 for further information on updates.)
2. Turn on the computer. If it is on already, you must turn it off and back on
again.
3. While the update diskette is starting, your computer will halt and prompt for
your administrator password. The computer will remain in a halted state until
the administrator password is entered.
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Using Your Personal Computer