1. A computer-implementable method comprising: creating an isolation region accessible only to a first processing unit in a data processing system; executing a loader to load a secure process in said isolation region; determining if said secure process is allowed to use real mode direct memory access commands; and in response to determining said secure process is allowed to use real mode direct memory access commands, enabling real mode direct memory access commands to enable said secure process to issue non-translated direct memory access commands to verify an operating system image utilized to boot said data processing system has not been altered since booting said data processing system.