How to remove windows old folder after windows 10 Update

Folder ‘$Windows.~bt’ contains the temporary windows installation files

After upgrading to windows 10, a copy of old OS is retained in the folder Windows.old. If everything is working fine and you don’t want to revert to old OS, you can remove its content to make more free space. But just deleting the Windows.old directory won’t let you remove the files in it as most of them are considered as system files.

To delete the Windows.old folder, please follow these steps. (more…)