Lenovo ThinkPad Edge E145, Руководство пользователя

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Table 5. Security menu items (continued)
Menu item Submenu item Selection Comments
access, set the user
authentication on the
operating system.
Password at restart • Disabled
• Enabled
If you select Enabled , a
password prompt will be
displayed when you restart
the computer. If you select
Disabled , no password
prompt will be displayed;
the computer will go ahead
and load the operating
system. To prevent
unauthorized access,
set the user authentication
on the operating system.
Power-On Password
• Disabled
• Enabled
Refer to “Power-on
password” on page 44.
Hard Disk1 Password • Disabled
• Enabled
Refer to “Hard disk
passwords” on page
44.
Flash BIOS Updating by
End-Users
• Disabled
• Enabled
If you select Enabled ,
all users can update the
UEFI BIOS. If you select
Disabled , only the person
who knows the supervisor
password can update the
UEFI BIOS.
UEFI BIOS Update Option
Secure RollBack Prevention • Disabled
• Enabled
If you select Disabled , you
can flash the older version
UEFI BIOS.
Note: If you have set the
OS Optimized Defaults
on the Restart menu
as Enabled , the Secure
RollBack Prevention
setting will be changed
to
Enabled automatically
and you cannot change the
setting manually.
Memory Protection Execution Prevention • Enabled Some computer viruses
and worms cause memory
buffers to overflow by
running code where only
data is allowed. If the
Data Execution Prevention
feature can be used with
your operating system, then
by selecting
Enabled you
can protect your computer
against attacks by such
viruses and worms. If after
choosing
Enabled you find
that a program does not run
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User Guide