Enter your physical machine's BIOS/UEFI settings and enable Intel Virtualization Technology (VT-x) and Directed I/O (VT-d) . If running inside a nested virtualization platform (like VMware Workstation or Esxi hosting an Ubuntu VM), make sure "Expose hardware assisted virtualization to the guest OS" is checked.
: Ubuntu 14.04 LTS or Ubuntu 16.04 LTS (the native target OS environments validated for the 17.1 lifecycle). Vmx-bundle 17.1r1.8.tgz Download
cd vmx-17.1R1.8/images/ ls