Lenovo ThinkPad Edge E145 User Manual page 104

Table 5. Security menu items (continued)
Menu item
UEFI BIOS Update Option
Memory Protection
88
User Guide
Submenu item
Password at restart
Power-On Password
Hard Disk1 Password
Flash BIOS Updating by
End-Users
Secure RollBack Prevention
Execution Prevention
Selection
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Enabled
Comments
access, set the user
authentication on the
operating system.
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.
Refer to "Power-on
password" on page 44.
Refer to "Hard disk
passwords" on page
44.
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.
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.
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