KVM is not installed on this machine (/dev/kvm is missing)

Solution 1:

Use the below command to check whether the KVM is installed in the machine or not,

kvm-ok

Output:

INFO: /dev/kvm exists
KVM acceleration can be used

Output like the below means,

INFO: Your CPU does not support KVM extensions
KVM acceleration can NOT be used

In this scenario need to install KVM using the below command,

sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils

Hope this helps.

Either your CPU does not support virtualization, or it is disabled in the bios. Go into your bios and see if you can find a setting to enable it.