![]() ![]() Deleting simply removes the pointers to the file, making it invisible and allowing free space for further storage. Hard Disk Drives- Permanent Data Erasureĭeleting a file from your hard disk drive or formatting the entire hard drive does free up space on your hard disk but does not destroy the data making it easier to be recovered by freely available data recovery tools. Before we arrive at a conclusion, we would first need to understand the basics of hard drive erasure, the emergence of data erasure standards and the evolution of faster and more complex flash-based storage media including the solid state drives. The answer to the number of passes to securely overwrite a hard drive permanently is not straightforward as it would involve several considerations including the technology, latest research findings, evolution of data erasure techniques and recommended methods by governments and international agencies. How Many Passes Are Necessary For Permanently Wiping Hard Drives? ![]() ![]() In this article, we will provide answers to all above questions and help you understand the mechanism of overwriting using different passes for Hard Drives and SSDs. Or which standard is suitable for a business or individual need to perform permanent data erasure? Why does different global data erasure standards propose different overwriting passes? Is performing more overwriting passes better than just performing lesser or even one? So, the question that arises is why do we need multiple passes for data destruction?
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