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Hello!
I have a 1TB dedicated drive in my laptop that is running windows 10. I accidentally formatted it and I panicked and cancelled the format then immediately restarted my PC. However now the drive is showing as Raw (Healthy). I confirmed that there is data using a program called DiskGenius. So I decided to use TestDisk to recover my Data. I opened "testdisk_win.exe" and chose: create > Disk dev/sdb - 1000 GB / 931 GIB - HGST HTS721010A9E630 > [EFI GPT] > [ Analyse ] > [Quick Search]. Everything was fine, it was displaying : Analyse cylinder 380/121600: 00%, and gradually increasing. However after leaving it for sometime I saw some errors were prompted, the main progress percentage stopped and another percentage was increasing alongside with another numbers other than the "380/121600" appeared and they started to increase too. I am worried now and don't know if that's normal or not, and what should I do? This is my first time trying to recover data and also the first time I use TestDisk.

This is a screenshot showing what I mean.

https://imgur.com/gallery/8Rh2Sbg

Sorry if I asked a silly question, I am still learning Any kind of help would be much much appreciated.
Thanks in advance!

I can't see the screenshot. Please upload it to this site using the "attachments" tab on the bottom of the page.

What was the partition filesystem before being reformated ?
It it was NTFS, TestDisk should be able to find the previous partition after ANalyse, Quick Search, (you can choose Stop to speedup the process), Deeper Search.
If TestDisk find your lost NTFS filesystem, try to list the files using 'p' key. If you can see your files, set the partition as P(rimary), on next creen, choose Write, confirm, Quit and restart your computer.