When you delete files from your hard drive, did you know that the file never actually gets deleted and is likely able to be recovered using tools like Recuva? Normally this isn’t an issue as we use our computer each day, however, if you’re planning to sell or donate your computer and don’t want your old data to be recoverable, follow the steps below to wipe the free space on your hard drive. The process is the same and will work on Windows 7, 8 and Windows 10.