ok...
this is one of the best softwares out there... http://www.m3datarecovery.com/
but you need to get hold of the full version...
this is a step by step instruction... http://www.m3datarecovery.com/data-recovery/online-help...
the method you should be looking for is..."How to recover deleted or lost partition?"....
it is towards the middle of the instruction page...
once u have done that, u need to convert d file format from RAW to NTFS...
here is a link on how to do that...
http://windows.microsoft.com/en-in/windows/convert-hard-disk-partition-ntfs-format#1TC=windows-7
there are other softwares out there which can help u in doing that as well... like Mini Tool Partition Wizard...there are plenty of softwares...just google it...
but u cant use d disk unless u convert d file format n then format d drive...
also u can check the health of the software through Hard Disk Sentinnell