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).