If you are curious, this is what happens when you delete a file or a folder. The operating system just marks the sectors containing the data as “unused”, this makes the file unavailable to access, that’s all.
Just remember that The file isn’t really gone until that same space is overwritten by something else. Even when it is overwritten, there are ways to retrieve data.
If you want to delete files permanently on your computer, just follow this guide:
1.First, download and install Eraser on your computer.
(link to download is provided at the end of this article.)
2. Now open the Eraser application, you will find a window.
3. Select the “Settings” and then change the option “Default file erasure method” to “Pseudorandom Data (1 pass)“.
You might ask a question like, “why you are not using default erase method?”
The default erase method here is “Gutmann (35 passes)“. It is no longer useful, because most of the patterns in Gutmann method are designed for older RLL/MFM encoded disks. And also writing an existing data with a series of 35 patterns is not needed to make the data unrecoverable, just a single pass with random data can do the job.
4. Save the settings and then close the application.
5. Now right click on the file(s) you want to erase, and then choose Eraser > Erase.
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