You've decided to sell your old computer and get a new one. However, your PC is overloaded with personal documents such as driver's license scans. Even though you deleted the files, format the hard drive, empty recycle bin, the information is still on your hard drive. With a data recovery program, you or anyone else can easily recover the deleted or formatted data from your computer’s hard drive.
But there's no reason to worry; any problem can be fixed. In this post, we'll use real-world strategies for erasing files forever so they can never be recovered, making data recovery be impossible. So, let's get into the article without wasting any other minute.
The data can be stored without the need for constant electricity. Each magnet's Plus and Minus Poles stand for the Binary Numeral System. Disk, Platter A magnetic domain is a tiny magnetic zone found on the ferromagnetic surface of the storage unit.
HDDs use directional magnetization of magnetic domains to store information. Each magnetic domain can be magnetized in either direction, with the resulting representations ranging from 0 to 1.
When you delete something from your hard drive or computer, it doesn't instantaneously disappear from the Platter. In most cases, the HDD will keep the file in its original location while marking the area where it resided as free for future use. In this method, the HDD can reuse the space previously occupied by the file you removed by writing over it with fresh data whenever it becomes available.
Why doesn't the hard drive erase the file from the Platter and move on? So, the solution is quite elementary. To instantaneously wipe the data you have deleted from your computer would require an impossibly high quantity of electricity and processing power. Making and using computers would become significantly more expensive as a result of this. Therefore, there is no need to delete the file from the hard drive immediately.
Overwriting data on a hard drive re-magnetizes the drive's magnetic domains. As a result, nothing from the former occupants of that space can be recovered. Unfortunately, no hardware or software is available to recover the lost information. It is, therefore, preferable to retrieve data before its being overwritten.
🔖Overwriting data with TRIM causes permanent loss:
The TRIM command alerts the operating system to data pages that are no longer usable. Only solid-state drives (SSDs) and SMR hard drives (HDDs) can use the TRIM command, as traditional HDDs store data differently.
The operating system will delete the damaged files when the TRIM command runs. If you open those pages in a hex editor, the data is irretrievably lost.
In other words, the minute the TRIM command executes, any data associated with the deleted file will be irretrievably erased from the storage device. That occurs quickly, and the command might run even during the beginning of the startup procedure.
Even if you immediately turn off your computer's power after accidentally erasing a file, you still won't have a chance of retrieving it without the assistance of a professional data recovery lab.
🔖Deleted data on a solid-state drive:
Unlike traditional hard disk drives (HDDs), data is normally destroyed when data is deleted from a solid-state drive. Files that have been destroyed on an SSD are typically irretrievable.
Your data may still be retrievable even if you think your situation fits under one of these categories. Data wiped from an SSD may still reside elsewhere on the drive or in a cache, and a physically damaged hard disk deemed unrecoverable by one data recovery business may be recovered by another using more advanced equipment.
Donemax Data Eraser is a robust program that can eliminate private data forever. This utility makes it impossible to recover deleted files by permanently overwriting them on the hard disk sectors where they were stored. Downloading this tool and following the instructions will solve your "how to permanently delete files so they can't be recovered" problem.
Donemax Data Eraser offers certified data erasure algorithms including U.S. Army AR380-19 (3 passes), DoD 5220.22-M ECE (7 passes) to ensure permanently erasing data from HDD, SSD, USB flash drive, digital camera, etc. Once the data is erased by Donemax Data Eraser, the data is gone forever, can not be recovered by any method. This tool offers three flexible data erasure modes to meet different erasure needs:
Mode 1. Erase Files.
- This mode is designed for permanently erasing specific files/folders. Just add the files and folders to the erasure list, and click Erase Now button. The selected files/folders will be permanently erased.
Mode 2. Erase Hard Drive.
- If you will sell your hard drive, use Erase Hard Drive mode to wipe the disk to permanently erase all data on the disk drive.
Mode 3. Erase Free Space.
- To make deleted/formatted data be unrecoverable, you can wipe free disk space of the hard drive. It only erases deleted/lost data on the hard drive, not affect the existing data on the hard drive.
No one likes the idea of strangers being able to view their private data online. While Windows' built-in encryption can help ensure that your deleted data cannot be recovered, employing one of the other methods we've outlined will give you the most piece of mind.
Data recovery is impossible after using a disk-wiping product like Donemax Data Eraser. It will delete everything on your hard disk, including the operating system and any files, and replace them with random data. It's helpful to do this before giving away or selling a computer so that you know all of your data has been removed.
Coco has been a writer and a chief programmer at Donemax software since 2018. Over 10 years of experience of writing troubleshooting articles in the software industry, she is passionate about programming and loves to providing solutions to Windows and Mac users. Also she enjoys music and palying tennis in her free time.
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