Windows8, 2.5" hdd, d:\ ntfs partition, file in need 9GB archive.pst
Archive was deleted by mistake. Instead of recovering/undeleting that archive, we copied one from all mighty but very old and wrong backup. That process probably overwrite original archive.
Nothing was written on d:\ partition after wrong backup.
I have tried recuva, avira recovery, Active unerase/undelete, Get data back, and some more free and commercial apps. Used both simple and raw search mode. Wasted 4 days...
I have not recovered much needed archive.pst
My two questions:
1. Is it possible to recover overwritten data?
2. How? What should I use/buy from software and or hardware?