28.12. Enabling Intel® VT and AMD-V virtualization hardware extensions in BIOS
To run fully virtualized x86 and x86-64 guests you require system with the Intel® VT or AMD-V extensions. Some systems disable the virtualization extensions in BIOS.
Verify the virtualization extensions are enabled in BIOS. The BIOS settings for Intel® VT or AMD-V are usually in the or menus. The menu names may vary from this guide, the virtualization extension settings may be found in
Security Settings
or other non standard menu names.
Procedure 28.1. Enabling virtualization extensions in BIOS
-
Reboot the computer and open the system's BIOS menu. This can usually be done by pressing
delete
or
Alt
+
F4
.
-
Select
Restore Defaults
, and then select
Save & Exit
.
-
Power off the machine and disconnect the power supply.
-
Power on the machine and open the
BIOS Setup Utility
. Open the
Processor
section and enable
Intel
®
Virtualization Technology
or
AMD-V
. The values may also be called
Virtualization Extensions
on some machines. Select
Save & Exit
.
-
Power off the machine and disconnect the power supply.
-
Run cat /proc/cpuinfo | grep vmx svm
. If the command outputs, the virtualization extensions are now enabled. If there is no output your system may not have the virtualization extensions or the correct BIOS setting enabled.