It’s true that reformatting media, specifically using the full format and not the quick format, does erase all the media’s data.
But when you need to ensure that all the information is gone, reformatting isn’t your best choice.
For example, when you sell a computer, you might want to ensure that personal, financial, and questionable files are gone from the device.
Or, say you’re a politician — but I digress. The point is how to remove the information from the media, to “wipe” the drive.
Software tools are available to scrub data from any media. This process involves repeatedly writing information until any trace of the original data is gone. Still, files could be recovered using the software approach.
To fully render media useless, the drive hardware must be damaged. The best way to destroy a hard drive is to drill holes into it; typically, three holes at least ¼-inch in diameter at different locations in the physical disk.
Because you probably don’t have a drill press in your, office consider using a data destruction company. They’ll either incinerate or shred the drive.
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