This tool is correct HDD’s working state from the angle of memory. When HDD can not be identified because of some head performance, you can use this function to make HDD service recovery to normal working state and report which heads is readable or unreadable in user’s area. Users could use this report to copy separately, it is easy to use. In other worlds, the functions not only can diagnose but also can repair. It could repair the problem of HDD can not be identified and diagnose the number of problem head. Before one month, When Mr. Chen diagnosed a HDD which some user sent, it triggered his inspiration and then he created the function. At that time, he recovered 5 heads data of 6 heads, the rest one’s data could be recovered after change head.
 Position of the function menu as shown in figure: