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Red Hat Enterprise Linux 9 Essentials Book now available.

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Red Hat Enterprise Linux 9 Essentials Print and eBook (PDF) editions contain 34 chapters and 298 pages

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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 Chipset or Processor 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
  1. Reboot the computer and open the system's BIOS menu. This can usually be done by pressing delete or Alt + F4 .
  2. Select Restore Defaults , and then select Save & Exit .
  3. Power off the machine and disconnect the power supply.
  4. 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 .
  5. Power off the machine and disconnect the power supply.
  6. 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.

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