Help! I tried to upgrade my 32-bit into 64-bit and saved my backup into my 1 TB external hard drive. Unfortunately, I formatted my external hard drive during upgrade and the file size shrunk into 32 GB. I managed to get back the unallocated space, and then I immediately tried installing recovery apps; hoping to recover my files but to no avail. Can a tech person fix and recover my lost data inside my external hard drive or is there another program/command that can get back my files?