Recovering data from hard drive after (accidental) Windows 10 reinstall

Buttfranklin

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Nov 8, 2015
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I was in the process of migrating my data from my old HDD to my new SSD but decided to reinstall Windows 10 halfway through after the registry on the SSD got <mod edit>. Windows 10 got reinstalled on the wrong drive, i.e. the HDD instead of the SSD. Along my journey, I also lost the data on my USB backup.

Here's the situation now: I have lost a lot of data, but not all of it. I managed to get about 1/2 my stuff - documents, work-related files, etc. - onto the SSD before I decided to reinstall, but the other 1/2 was still on the HDD that got wiped. At this point, all I really want to get back are my pictures and some bits of music I wrote. This would be a fair amount of data - something on the order of 30GB or so.

The HDD is 1TB, GPT NTFS, which is totally blank apart from the 25GB of reinstalled Windows 10. It has been quick formatted once. I think I can get the data I'm missing from there somehow.

I have tried the following pieces of recovery software - I'll just add that, obviously, I'm running these after booting from the SSD:


* Recuva. I ran a deep scan and it got to about 20% complete in a few hours. I left it for a full day after that and it got to 29%. It had found something like 11 million files at this point and was using so much memory that my whole PC was basically inoperable. It was also predicting that the scan would last about five days. I cancelled it then. It showed me some results, but almost none of the files were actually salvageable. Roughly 5% could be previewed.

* EaseUS Data Recovery. The deep scan completes in about half a day. However, it finds 44 million files for a total of 26TB of data on a 1TB HDD that was only half full to begin with, because it's finding a few dozen copies of each and every file. It's recovered the folder and file tree near-perfectly, but, again, almost none of the actual files are salvageable. About 5% could be previewed or opened after recovery.


I'm getting pretty desperate. I've been trying to get my data out for about a week now. I would really appreciate any help you guys could give me. e.g. I've heard that "GetDataBack" allows you to recover a whole partition in one fell swoop. Is this true?


<Let's be watching our language in these forums>
 
Chances are good that the MFT and directories were overwritten when you installed Windows 10 and cannot be recovered. Unfortunately you've lost any data you didn't have backups for. As a last gasp effort you could attach the drive externally to a Linux machine and try Testdisk. However, do not expect miracles, and do not expect the scan to be quick.
 

Buttfranklin

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Thank you for your help. I'll look up Testdisk.

The directories are mostly conserved - for instance, in the EaseUS results, there's about ten copies of the 'C:\Users\" folder, one of which has completely correct directories + file names under 'C:\Users\[my name]' within it. Very few of the files within are actually recoverable though.

I'm starting to resign myself to not getting the pictures back. Oh well. I should count my blessings, really - I've saved everything that's actually important.
 

ganymede-

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Jul 25, 2008
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I recently deleted one of my photos folders that had about 1GB of data, mostly jpgs and psd files. I tried a number of recovery programs and I did not get anywhere with them, similar to you long scans with little to show for them. I was desperate and decided to try the Thumbtack service. I typed in data recovery and typed in my what my problem was and in a couple of hours I had a number of people/companies that were making bids to try and do my data recovery. There was a couple of big companies that wanted a ton of money, but I found this one particular local guy that did data recovery on the cheap ($150) because he was trying to build up a solid rating base. The tech guy spoke with me on the phone for like 30 minutes, really long, and not like everyone else I had talked to before him, and so I went with him. I dropped my hard drive off at his work and a couple days later he had recovered a lot of what I had deleted. It was well worth the $150. You sound like you are running out of options, and maybe you should consider outsourcing the problem, though admittedly, your files sound further along the deletion process than mine were, but I might be option to consider. I just wanted to throw you this bone. I hope you are able to get some of your data back, losing photos for good really stings. Good luck.