I notice that when doing a Recovery/Reset this PC/Remove everything operation, Win10 will create a windows.old folder similar to the one it created when doing a win7/8 to win10 upgrade. But the folder created during the upgrade disappears after 30 days. Does anyone know if that happens with the windows.old folder created when doing a Recovery/Reset this PC/Remove everything operation? Does it disappear on its own also? Or is a manual removal required?