Lenovo L330 manual Password at restart, Uefi Bios Update Option, Memory Protection

Table 5. Security menu items (continued)

Menu item	Submenu item	Selection		Comments
	Password at restart	•	Disabled	If you select and enable
		•	Enabled	Password at restart,
				a password prompt is
				displayed when you restart
				the computer. If you select
				Disabled, no password
				prompt is displayed; the
				computer goes ahead and
				loads the operating system.
				To prevent unauthorized
				access, set the user
				authentication on the
				operating system.
	Power-On Password	•	Disabled	Refer to “Power-on
		•	Enabled	password” on page 46.
	Hard Disk1 Password	•	Disabled	Refer to “Hard disk
		•	Enabled	passwords” on page
				46.
UEFI BIOS Update Option	Flash BIOS Updating by	•	Disabled	If you select Enabled,
	End-Users	•	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.
	Secure RollBack Prevention	•	Disabled	If you select Disabled, you
		•	Enabled	can flash the older version
				UEFI BIOS.
Memory Protection	Execution Prevention	•	Disabled	Some computer viruses
		•	Enabled	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
				correctly, select Disabled
				and reset the setting.

Chapter 7. Advanced configuration 93