Embodiments of the invention perform a stable data write operation at a low operating ambient temperature and promptly perform a write command process within a magnetic recording apparatus that employs a load/unload design. In one embodiment, write heads unloaded on a ramp are completely preheated before...http://www.google.es/patents/US7277251?utm_source=gb-gplus-sharePatente US7277251 - Data reliability improvement at low temperature