I have an old WD drive. All pass smart except reallocated sectors. It has 1200 of them, and fails smart test. There are no pending. This occurred when the fan on its external enclosure failed. I did a 23 hour reformat (which should map out any bad sectors) but it still fails smart. Since it works fine, and other than the one over heat episode, is there a way to reset the smart data? I would think a long format would have reset it.