Lenovo 28762JU, Руководство по техническому обслуживанию аппаратной части, Страница: 55 / 146

Exception: If only an SVP is installed, the password prompt does not appear when
the operating system is booted.
Power-on password
A power-on password (POP) protects the system from being powered on by an
unauthorized person. The password must be entered before an operating system
can be booted. For how to remove the POP, see “How to remove the power-on
password.”
Hard-disk password
There are two hard-disk passwords (HDPs):
v
User HDP—for the user
v
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 . The
User mode requires two HDPs; the system administrator enters both in
the same operation. The system administrator then provides the user HDP to the
system user.
Attention: If the user HDP has been forgotten, check whether a master HDP has
been set. If it has, it can be used for access to the hard disk drive. If no master
HDP is available, neither Lenovo nor Lenovo authorized service technicians
provide any services to reset either the user or the master HDP, or to recover data
from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.
For how to remove the POP, see “How to remove the hard-disk password” on
page 48.
Supervisor password
A supervisor password (SVP) protects the system information stored in the BIOS
Setup Utility. The user must enter the SVP in order to get access to the BIOS Setup
Utility and change the system configuration.
Attention: If the SVP has been forgotten and cannot be made available to the
service technician, there is no service procedure to reset the password. The system
board must be replaced for a scheduled fee.
How to remove the power-on password
To remove a POP that you have forgotten, do the following:
(A) If no SVP has been set:
1. Turn off the computer.
2. Remove the battery pack.
For how to remove the battery pack, see “1010 Battery pack” on page 71.
3. Remove the backup battery.
For how to remove the backup battery, see “1120 System board, fan assembly,
and backup battery” on page 92.
4. Turn on the computer and wait until the POST ends.
Related service information
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