Will writing information to the entire possible amount of memory after deletion help to avoid information recovery?

Question

Iron

For example, I deleted a file. And I know that it is possible to restore it with the help of specialized software. I also know that in order to prevent the possibility of recovering information, you need to write a new one. Attention to the question: will the recording of meaningless information help to erase the previous one and prevent its recovery?

Answer 1

Will the recording of meaningless information help to erase the previous one and prevent its recovery?

Yes, it will help. However, you need to keep in mind the specifics of your device.
On hard disk drives (HDD) , you have the opportunity to overwrite new data exactly in those sectors where the file being erased was stored. Thanks to this, you can take a program like Eraser and erase information in a "targeted" way.
Now this situation is starting to change - the newest hard drives have begun to have translators similar to those used in SSDs.
In addition, some models use Shingled Magnetic Recording (SMR) technology., which raises the question of what happens to the tape that is first written to the media cache. Under the hood, this technology is far from being as simple as it seems, but in short, even though technically temporary, the duplication of information in different areas of the disk leaves room for doubt.
On solid-state drives (SSD), flash drives, and memory cards, it will not be possible to write information to the desired sector due to the wear leveling mechanism, which evenly “smeares” data throughout the flash memory.
However, the SSD has TRIM, which can be somewhat relied upon, and which often causes irretrievable loss of information after accidental deletion.
But due to the fact that our goal is guaranteed deletion, it is safer to actually fill the free space with some unimportant data.
Both HDD and SSD can be wiped entirely by running a write test "across the clearing", with any software that can do this. For example, R. tester . As a bonus to mashing, get a surface/memory report for free.
For both options, you need to remember that the sector with secret data can be remapped by the drive and removed from the user address space. After that, the reserve sector already substituted in its place will be overwritten, and not the original one.
This is already one of the last degrees of anxiety, approaching paranoia - in most cases, access to the contents of remapped sectors and the media cache requires serious knowledge and special equipment. It is unlikely that they will look for information of a simple user in this way.
But if you are deleting some serious corporate information, or secrets of national importance, it is worth remembering the last paragraph and considering the idea of ​​physically destroying the disk (or demagnetizing it with special devices). This is the safest way to help all participants in the process (including the disk - ba-dum-tss!) sleep peacefully.

Answer 2

Yes.
But there are easier and faster ways.
Just overwrite the file with other data, there are a lot of utilities for this.