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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Will I need to install more than one backflow prevention device? Every water line to the property must have a backflow prevention device. If your property is required to have a backflow prevention device and has multiple water service lines, you must install a device on each line. Recently, I received an order to install a backflow prevention device from DEP. The 30-day installation period has nearly expired.