Disabling VT-x on VirtualBox
I do not have VT-x extensions available on my Hackintosh. A default
install of Virtualbox on Mac OS X assumes VT-x availability. This is
because all of the Mac hardware lineup supports it. In order to disable
VT-x extensions to allow a Virtualbox VM to boot on a hackintosh do:
$ VBoxManage modifyvm "VM Name" --hwvirtex off
