
So I stumbled upon TestDisk which seems to have the fix for that. The problem is that when I try to RebuildBS, nothing whatsover happens once the 40 min scan for MFT is finished. I get no error messages or anything. It goes "Search mft 456______/457156608", then it gets me back to the previous screen:

Is this a bug? If not, why is it (not) working like this?