My old machine died. I installed the old disk as an extra disk in the new Windows 10 (old machine also was Windows 10). A lot of files I can' delete. I've tryied to take ownership of everything but some files fail. I don't need an unused windows installation in the disk. I've tried to take ownership, but it keeps asking me to that I need to be my user to delete the files.
I managed to delete some dirs following these instructions, but there are still some dirs that I can't delete.
How do I gain control of everything so I can clean the disk?