Embodiments described herein provide for robust servo patterns that comply with planarization constraints and also allow use of a single master template for manufacture of both the front and back of a magnetic disk. The method utilizes an oligonucleotide primer that contains a recognition site for a restriction enzyme such that digestion with the restriction enzyme generates a 5\u2032 overhang containing the locus of interest. In this case, a high-number-pins-test switch signal is inputted to an output buffer of a bidirectional pin of the external pins, set the bidirectional pin to output mode. When the radiating element is switched on, and the temperature of the second end of the thermal connector and the temperature of the surface of the laminating roller are approximately equal and below an optimal laminating temperature, the temperature of the second end of the thermal connector rises at substantially the same rate as the surface of the laminating roller.