method for characteristic testing of head in harddisk drive and recording media adapting the same

摘要

The present invention more specifically relates to a method of inspecting the properties characteristic of the head of the hard disk drive This invention relates to a method and recording medium for determining the unstable head. ; in the head characteristic test method head characteristic test method of the hard disk drive is a hard disk drive according to the invention, applied to the head by varying the bias current process of detecting the size change of the signal outputted from the head; Calculating a main beam of the curve showing the size change of the signal for the bias current change, and, by the difference between the mean square and the interpolation line and the curve course for calculating the non-linearity of the signal change for changing the bias current; And is characterized in that it comprises the step of determining the quality of the head according to the calculated degree of nonlinearity. ; Head characteristic inspection process according to the invention has the characteristics and performance of the head unstable no matter has the effect to make it possible to detect the head.