JoseJimenez wrote: » What processor/and motherboard is it? Anyway, if that is really the case I would use Xen paravirtualization instead. Managing tools are the same (virsh, virt-manager). More info on setting up Xen hypervisor (Dom0):HowTos/Xen/Xen4QuickStart - CentOS Wiki There is also great book from "No Starch Press": The book of Xen.