Picked up a cool trick, using CACLS, you can forcefully set full control to the everyone account on everything on the HDD. This is great if you are an Administrator, but you still cant get into some files, or the “Take Ownership/Replace permissions on child objects” trick doesn’t work properly, or you are having some sort of generic “access denied”, “permission denied”, “unable to open” or “interface is unknown” issues.

cacls C:\ /g everyone:F /c /t