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Formatted NTFS partition - best data recovery

During a routine OS reinstall on partition 2 of a HDD, the installer formatted partition 1 with no warning.

Partition 1 was NTFS before, and is NTFS now. There was minimal data written to partition 1 (Sys vol Info, NTLDR, a couple of other files, a total of 26 MB)

What are the best methods / recovery programs (Windows) that can be used to recover the data on partition 1, a total of approximately 20Gb of user files.

Is there a way to do it so that data is recovered in its previous folder hierarchy (rather than a dump folder of 50.000 recovered files?)

Thanks
R.
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It seems ADD only recoveres deleted partitions. Mine is not deleted, but formatted.

I let ADD, however, try a ful scan of the disk. It didn't find anything.

Please advise on other possible solutions. thanks
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OnTrack EasyRecovery... for the 3rd time, during the recovery process, after finding some 10K files and folder, the software crashes.

Says "Error encountered while scanning partition", at which point both the 'elapsed time' and 'remaining time' counter start increasing 1 second at a time. The software fails to respond after that. No error code, no reference in the manual. Anybody ever encountered this before / found the problem / a solution?

Trying other suggested programs in the mean time.
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Good catch, Nobus...

Hitachi's Drive Fitness Test says about my drive...
"Failure Code 0x70 - Defective Device
Technical Result Code - TRC 7000133F"

0x70 apprently means "Corrupted Sector. A general hard disk drive problem was detected. You can run the "Erase Disk" utility. If a subsequent test fails again, the drive is defective and should be replaced."

I tried to run repair without erase, but I keep getting 0x70.

This explains while the recovery tools crash. Is there no way to recover the files that are NOT on the corrupted sector?
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Thank you all.
HDD Regenerator did find and fix almost 5000 bad blocks, but there was another 1200 which it couldn't fix even on 3rd and 4th pass...

A+ for team effort

HDD RIP
tx for the info !