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If you do not follow this procedure, the results are
unpredictable.
Note: Whenever possible, use BIOS as an interface to
reset the system microprocessor to the real
mode. For more information about resetting the
system microprocessor, refer to the
IBM Personal
System/2 and Personal Computer BIOS
Interface
.
Power-On Password
RT/CMOS RAM has 8 bytes reserved for the power-on password
and the check character. The 8 bytes are initialized to hex 00. The
microprocessor can access these bytes only during POST. After
POST is completed, if a power-on password is installed, the
password bytes are locked and cannot be accessed by any program.
During power-on password installation, the password (1 to 7
characters) is stored in the security space.
Installing the password is a function of the built-in system program
Easy-Setup
. The power-on password does not appear on the screen
when it is installed, changed, or removed. After the power-on
password has been installed, it can be changed or removed only
during POST.
The computer also can have a keyboard password. For more
information, see the keyboard and auxiliary device controller section
of the
IBM Personal System/2 Hardware Interface Technical
Reference
.
Selectable Drive-Startup Sequence
Selectable drive-startup (selectable boot) allows you to control the
startup sequence of the drives in your computer. The order in which
the computer looks for the drives for your operating system is the
drive-startup sequence
. If you are working with multiple operating
systems, you might want to change the drive-startup sequence to
load the operating system from the hard disk without first checking
the diskette drive, or to do a remote program load (RPL).
ThinkPad 560/560E System Board 2-29