My Passport 25E2 3TB recover partition

I accidentally erase my hard and lost 3 partition full of information. I recovered 2 of them, intact, but the third one seems to be gone. That will be the fist partition on the hdd. I read many articles of how to but im clueless how to recover my data from that partition. If fzabkar could help me I will appreciate very much.

In an article you say " To avoid wasting your time and thrashing your drive, I would start by using a disc editor (eg DMDE) to scan for boot sectors. There should be a backup NTFS boot sector at the end of the user area. If you can see this, then the replacement board will be a match, and you can then try to recover your data."

…and here I got stuck

Thank you !