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I have 1 TB hard drive, and I want to delete sensitive data from it. What I have tried:

  • Format the hard-drive "deep slow format" from CMD command.
  • I tried c-tools.
  • Also I tried cipher built in tool that came with windows 10.

But nothing worked. I also used cipher tool 3 times to be sure it write random numbers on my deleted files but that doesn't work.

With normal recovery tool I can backup the same data again!

Is there any good command to rewrite on these deleted files so no one can recover them again?

Blackwood
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Narzan Q.
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2 Answers2

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I don't know your tools (except format), but evidently something you are doing is not going right.

There are many free disk-shredding utilities. You may find a list with reviews in the article Best Free Hard Drive Eraser, which includes Eraser, CCleaner, Darik's Boot and Nuke, File Shredder, and more.

harrymc
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If preservation of the drive is not important, perhaps physical destruction of the device is your best option. A sledgehammer ought to do the trick.

Stanley Yu
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