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Pavel Rimsky2016-04-23 22:18:03
Hard disks
Pavel Rimsky, 2016-04-23 22:18:03

Set up the hard drive to completely delete information the first time, is it possible?

And so, people who understand the work of a hard drive know that after deleting a file from a hard drive and deleting it from the trash, the file is not deleted, if desired, it can almost always be restored.
At the moment, there are only 2 options to permanently delete a file from the hard drive, save the hard drive, or overwrite information on it, through a program such as Eraser.
The first method is not economically viable, the second one takes quite a lot of time, especially if the hard drive is from 500 GB, and we make a penetration in 32 steps (Gutman or whatever it is).
Are there applications that immediately delete some necessary file, after which it will not be possible to restore it even for a UFO?

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8 answer(s)
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Dmitry, 2016-04-24
@plin2s

For Linux, there is Shred. Perhaps you can find something similar for windows.

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Puma Thailand, 2016-04-23
@opium

No

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Pavel Selivanov, 2016-04-24
@selivanov_pavel

If the file can still be permanently deleted from the HDD, then everything is generally sad with the SSD - the controller itself redistributes what to write where, and repeated overwriting simply does not get to the same place. If the information is so critical, and you need the ability to quickly delete files, then it's easier to encrypt the entire disk.

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Anastasia Belousova, 2016-05-04
@nickelcore42

It is important to correctly indicate what you need - the removal of information or its destruction . Judging by the question, you are interested in the destruction of information - actions, as a result of which it becomes impossible to restore information.
There are two ways to destroy information: destroy the information itself from the carrier, or destroy the carrier with the information itself.
The destruction of information from a machine carrier using specialized software is carried out using the following methods:
The destruction of the machine storage medium is carried out using the following methods:
Only you can determine the method of destruction, based on the degree of damage from a violation of the confidentiality of information and your budget.
You can read the data destruction standards:

  • GOST R50739-95;
  • DoD 5220.22-M;
  • NAVSO P-5239-26 (RLL);
  • NAVSO P-5239-26 (MFM);
  • VSITR.

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Vasily, 2016-04-24
@Foolleren

Method 1, by the way, is so-so, if you feel like it - uncles in white coats will collect the fragments and, without reading heads, look at the orientation of the magnetic fields.
not counting the methods of physical destruction as a response, the only reinforced concrete way to get rid of information is guaranteed in 1 pass to be writing over the hardware generated random, in other cases, with 1 pass, they can find the program you used and match the seed to the gamma, and then count bypassing the controller magnetization and restore the previous info. But this will happen only if you really, really annoy the special services, in other cases it’s enough to write stupid zeros.

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jamaZ, 2016-04-24
@jamaZ

It's not the hard drive, it's the file system.
The operating system manages the file system.
That is, it's all about the settings of the operating system.
Specifically for Windows - this is the so-called. file system group policy.
If you need third-party applications, then there are plenty of them. They usually contain the word Wipe in the name.

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CityCat4, 2016-04-24
@CityCat4

Keep the screw in the rack and the included microwave nearby. There are still such devices - such as a power supply. They are mounted above the screw and, when the button is pressed, they give out an impulse that erases everything nafig.

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