1. A method of securing a region in a memory of a computer comprising: halting all but one of a plurality of processors in a computer, the halted processors entering into a special halted state; identifying a region in a memory of a computer; loading content into the region only after the halting of all but the one of the plurality of processors; protecting the region from access by the halted processors; using a signed cryptographic hash of the region to verify whether the content can be trusted; and placing the non-halted processor into a known privileged state; causing the halted processors to exit the halted state after the non-halted processor has been placed into the known privileged state.