How can I create a VM in Vagrant with VirtualBox with two CPUs?

Question

On Windows 7 64 bit trying to start up a VM (Ubuntu 32 bit). I\'m having trouble getting my VM to show two cores despite adding the modify vm command in my Vagrantf

Answer 1

Add vb.customize ["modifyvm", :id, "--ioapic", "on"] to the config.vm.provider block inside your Vagrantfile.

Looking at the VirtualBox documentation it mentions:

"Note Enabling the I/O APIC is required for 64-bit guest operating systems, especially Windows Vista; it is also required if you want to use more than one virtual CPU in a virtual machine."