I had a problematic OS partition (original) that I could not fix. I made a backup 2 months ago and decided to just restore to that older partition since I could not fix it. I had trouble with the backup as well. So I just formatted the drive and created a fresh install.
I now realize that I can fix the problem on the original partition.
I tried testdisk but I could only find the backup partition I installed. Is it still possible to restore the original partition?