Accidentally erased an external harddrive when creating a Windows Recovery file. Hi Guys,

I tried to create a windows recovery file on an empty partition of a 2TB external harddrive and it overwrote the whole drive, creating a 32GB recovery file and leaving ~1800GB now unformatted.  Is there a way to recover data from the unformatted portion?

I'm running Windows 8.1 and the external harddrive as a WD My Passport. 

Thanks for any help.