1.12.7 standalone installation remove my vault, any way to restore?

What I’m trying to do

i want to enjoy complete new features of version 1.12.7. So i chose a standalone installation in my current obsidian folder. yes, it was a overwrite installation. As my notes were all in sub-vault folders in obsidian folder, i had through the sub-vault folders will be kept but actually not. my vault folders had been removed.

Things I have tried

i tried to find if my vault folders was removed to other places or changed attribute to hidden. but nothing found. then i tried recura, but it don’t help too much.
is there any other way to restore my vault?
PS, my obsidian was installed on a flash disc.

OK ,problem solved. i used a Chinese app called DiskGenies, free version. and it saved all my notes back. the same as before. thanks heaven.