When the virtualbox virtual machine is set to 2 CPUs, the following error occurs: VT-x features locked or unavailable in MSR.

Address: http://blog.csdn.net/zklth/article/details/7019990

Error: VT-x features locked or unavailable in MSR.

This is because the CPU does not support VT-X or VT-X technology being locked.

If you do not enable virtualization support, you cannot install a 64-bit operating system on a virtual machine or install an operating system to set multiple CPUs. If you install a 32-bit operating system to set only one CPU, the above error will not occur.

VT-X is Intel CPU virtualization technology, check whether the CPU supports VT-X Technology:

CAT/proc/cpuinfo | grep flags

If the vmx option exists, it is supported.

Set the CPU to enable the VT-x technology.

Start Enter BIOS options , Choose config> CPU> intel.
Virtualization Technology, There is an Intel VT-D feature , Changed to enabled. , Save and exit, shut down, and then start the machine.