How to recover data from lost partition?

Aug 21, 2018
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Guys, I ran system recovery option today. Now I got fresh windows 8 installation. Then I realized I have lost my D:/ partition. I had important data in that partition.
When I go to disc management it shows that space as unallocated space.

Is there any chance that I can get that data back?
please, I'm looking for a help.
 
Solution
Use your backup copy.
If you didn't had backup, those data couldn't be that important. Because one must always have backup of important data.