Deleting files to make them completely unrecoverable
Sometimes it isn’t good enough to simply delete a file. Sometimes we need to delete files forever. Most people are unaware that when they delete a file, the underlying data used to create that file is not deleted. In fact as long as that information is not overwritten with new file data such as a new photo or new document, the file itself can be reconstructed quite simply by using powerful data recovery software. Unfortunately that is exactly the opposite of what you may wish to accomplish when you hope to delete files forever.
To permanently erase files you will need to purchase a program known as a file shredder. A file shredder basically does the same thing with digital information that a paper shredder does with paper. It breaks down deep file information into tiny pieces and mixes them all up. Then it does this over and over again so many times that even the most powerful mathematical formula cannot decipher and reconstruct the data. Bear in mind that once you use a file shredder on a drive or partition you will never be able to recover deleted files from external hard drive storage on that drive.
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