Refer to your motherboard documentation for the information on configuring your system BIOS. The process of enabling the AMD-V or VT technology depends on your motherboard and processor type. Otherwise, the command will print and a failure message and optionally a short message on how to enable the extension. If the processor virtualization capability is not disabled in the BIOS the command will output: INFO: /dev/kvm exists
Once done, check if your system can run hardware-accelerated KVM virtual machines: kvm-ok To install the package: sudo apt update sudo apt install cpu-checker Run the following commands as root or user with sudo privileges To check if VT is enabled in the BIOS, use the kvm-ok tool, which is included in the cpu-checker package. On some machines, the virtual technology extensions may be disabled in the BIOS by the manufacturers.
Otherwise, if the output is 0 it means that the CPU doesn’t support hardware virtualization. If your CPU supports hardware virtualization, the command will output a number greater than zero, which is the number of the CPU cores. The system should have either an Intel processor with the VT-x (vmx), or an AMD processor with the AMD-V (svm) technology support.Ĭommand to see if your processor supports hardware virtualization: grep -Eoc '(vmx|svm)' /proc/cpuinfo To be able to run guests with more than 2 GB of RAM, and to host both 32-bit and 64-bit KVM guests, you must have a 64-bit host system.īefore continuing with the installation, make sure your Ubuntu host machine supports KVM virtualization.
The same instructions apply for Ubuntu 16.04 and any other Ubuntu-based distribution, including Linux Mint and Elementary OS. We’ll also show you how to create virtual machines that can be used as a development environment for PHP, Node.js, Ruby, and so on. This guide explains how to install and configure KVM on Ubuntu 18.04 desktop. Virsh commands cheatsheet to manage KVM guest virtual machines
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