Why does deleted data stay on a HDD once written, waiting to be overwritten, as opposed to being removed when requesting deletion?
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Take a book. It has a glossary with page numbers. That’s like a hdd. When you erase data you just erase the glossary that points to the info. Saves time and the life of the hdd. You could do a thorough erase and it’ll erase and rewrite and erase again all the data
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