IBM ThinkPad T20, Hardware Maintenance Manual

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Related service information
Related service information
This section provides information about the following:
Ÿ
“Service Web site”
Ÿ
“Passwords”
Ÿ
“Power management” on page 21
Service Web site
When the latest maintenance diskette and the system
program service diskette are available, a notice will be
posted on
http://pccbbs.raleigh.ibm.com/
Passwords
As many as three passwords may be needed for any
ThinkPad computer: the power-on password (POP), the
hard-disk password (HDP), and the supervisor password
(SVP).
Exception: If only SVP is installed, the password prompt
doesn't appear when the operating system is
booted.
When any of these passwords is used, a password prompt
appears on the screen whenever the computer is turned
on. The computer does not start until the password is
entered.
Power-on password:
A power-on password (POP)
protects the system from being powered on by an
unauthorized person. Without knowing the password,
nobody can start the system.
Hard-disk password:
There are two hard-disk
passwords (HDPs):
Ÿ
User HDP—for the user
Ÿ
Master HDP—for the system administrator, who can
use it to get access to the hard disk even if the user
has changed the user HDP
Note: There are two modes for the HDP: User only and
User. You can enter two HDPs when
you select User.
Attention
If the master HDP has been forgotten, there is no way
to delete it. But you can still access to the hard disk if
you remember the user HDP. If the user HDP has
been forgotten, the password cannot be removed and
the hard disk will not be accessible.
General descriptions
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