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Virtualization technology, Enhanced c-states, Execute-disable bit capability – Toshiba Portege R400 User Manual

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User’s Manual

HW Setup & BIOS Setup

Virtualization Technology

Virtualization Technology sets enable or disable of the Intel Virtualization
Technology installed in the CPU.

Intel Virtualization Technology is the technique that allows one machine to
operate as multiple virtual machines.

The Disabled command does not allow use of the Intel Virtualization
Technology.

The Enabled command allows use of the Intel Virtualization Technology.

Enhanced C-States

This feature enables or disables the Enhanced C-States.

Execute-Disable Bit Capability

This setting, which is displayed on the first page of the setup screen,
configures the Execute-Disable Bit function of the computer’s processor.
This function is specific to Intel

®

processors and, when activated, helps to

reduce security threats to the computer by preventing certain classes of
malicious ’buffer overflow’ attacks when combined with a supporting
operating system such as Windows Vista™.

The Virtualization Technology is supported with some models.

Enabled

Enables Virtualization Technology.

Disabled

Disables Virtualization Technology (Default).

System configuration changes, other than changes to this setting, should
be made within Windows by using applications such as
TOSHIBA HW
Setup
, TOSHIBA Password Utility, Windows Device Manager and so
forth.

This option is displayed only on models with an Intel

®

Core Duo

processor.

Enabled

This lowers the power consumption (Default).

Disabled

This does not lower the power consumption.

Available

Makes the processor’s Execute-Disable Bit
Capability available for use.

Not Available

Disables the processor’s Execute-Disable Bit
Capability so that it is not available for use.
(Default).