To delete the Windows.old folder from an earlier installation of Windows, follow these steps: Advanced users can also use a command prompt to delete files and folders from an earlier installation of Windows Vista.ORE INFORMATION. To delete the Windows.old folder from an earlier installation of Windows, follow these steps: Advanced users can also use a command prompt to delete files and folders from an earlier installation of Windows Vista. To do this, follow these steps:
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1 To find lost valves, picture the layout of the irrigation system. 2  Note where the wires enter the ground from the main controller, and visualize the path of the wire. 3  A common irrigation valve location is near the corners of the house or main building, and/or just downstream of the backflow preventer.