Home > Computers, Technology > Before Selling Your Computer — Erase It!

Before Selling Your Computer — Erase It!

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You have done a ton of personal stuff on your computer. I’m not going to judge what you’ve done, nor will I ask because I just don’t want to know. However, something you should be aware of is that your computer retains small bits of all this stuff that you do in its brains. Web history, applications installed, documents, etc. Even if you erase these files, they are not gone. If you commit a crime, forensic scientists can confiscate your computer and retrieve all of your documents even if you deleted them. When you delete a file, the file itself is not gone, just that piece of storage space is declared to be available (I’m oversimplifying, but I mean the title of this blog is “That Was Annoying to Learn,” if you want more detailed stuff, read a white paper). When that space is declared available, it can be overwritten by something else, like a document. So if a document is 5,000 bits long of 1’s and 0’s (binary data), then deleted, and a new document is made and it happens to only be 2,000 bits of data, this leaves 3,000 bits of data of your old document left over that can be retrieved and pieced together by those forensic scientists… or even a casual user who is interested in computers and know how to use Linux tools!

There are all kinds of free options available to erase your computer. You just have to decide, do you want COMPLETE erasing or just setting back to how it was when I first bought it?

If you have intensely personal stuff (you be the judge), completely erasing it with a free program called Dban Boot and Nuke is a great option. I frequently do this because I have the resources immediately available to reinstall Windows. But if you are selling to a friend and don’t need government-grade erasing software and just need to reset to factory settings to get ride of all your personal stuff, Windows has a super easy built-in solution. So we will break this article into two separate posts… I guess three if you include this page. So, lets get started!

Completely and Securely Erasing Your Computer

Restoring Your Computer to Factory Settings

If you are reading this part, you’ve gone too far, go back up and make your selection!

 

Categories: Computers, Technology
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