I have a folder there where I make my backups, suddently, after trying to put this HD at another computer,
which caused a problem at the installation, only 3 from my 19 backup folders are visible.
The interesting stuff is that they appear at TestDisk, but not at explorer, as the screenshot shows:


Also, TestDisk is showing a duplicated folder (marked in yellow at the screenshot)
Any idea on how can I fix it?
I can copy the "hidden" folders to my actual hard drive, but I don´t have enough space for everything.