Acer Altos R520 manual Virtualization Enables or disables the system to run

98		4 BIOS setup
Parameter	Description	Option
Virtualization	Enables or disables the system to run	Disabled
Technology	multiple operating systems and	Enabled
	applications in different partition.

Execute Disable	When Enabled, the processor disables
Bit	code execution when a worm attempts
	to insert a code in the buffer preventing
	damage and worm propagation.
	When Disabled, the processor forces the
	Execute Disable Bit feature flag to
	always return to 0.
	Note: This parameter is hidden if the
	processor does not support this function.

Enabled

Disabled

Hardware	Enables or disables the speculative
Prefetcher	prefetch unit within the processor(s).
	Note: Changing this feature may affect
	system performance.

Enabled

Disabled

Adjacent Cache	When Enabled, cache lines are fetched
Line Prefetch	in pairs (even line + odd line)
	When Disabled, only current cache line
	required is fetched.
	Note: Changing this feature may affect
	system performance.

Enabled

Disabled

Processor	When Enabled, all processors will be
Re-Test	activated and retested on the next boot.
	This option will be automatically reset to
	disable on the next boot.

Disabled

Enabled

Processor #	Press Enter to access the Processor #
Information	Information submenu.