Most of the Western digital external drives cannot be recovered by routine methods which data recovery companies adopt. They are recovered by a five step procedure method. Most of the hard disk get damaged if this five step procedure is not followed. Heads and Media damage is very common in drives which have received shocks by falling or voltage fluctuations. Such drives a head replacement becomes necessary to get data. However, we try to use a head map method to identify the damaged heads and recover data from the remaining heads.