Got This Toshiba HDD 2.5" Internal SATA Case From One Of My Corporate Clients .The following Were The HDD Details [ Toshiba MK5056GSY HDD2E61 F VL01 S Y9BGF2BNSHR9 ] .The Total LBA Were 976,773,168 Sectors  .We Divided The HDD LBA Into 4 Parts and Cloned [ Reverse Cloned Part No 4 , 3 And 2 ] First .Then We Concentrated On the Problem Part [ Part No 1 ] . This Part No Was Further Divided Into 4 Parts And Imaged To Another HDD .There Were Several Issues In The Cloning/Imaging And We Were Present infront Of The Computer And Solved The Same  .Finally The Resultant HDD Was Presented To a Logical Data Recovery Software And 3 Partitions Data Was Recovered .It Took 10 Days For The Same and The Work Was Going On 24x7 for The Same .Damn