How to delete hard disk data completely

Ever since the Prism gate incident was exposed, the information security issue, which has been a subject of much concern, has returned to the public eye and caused some people to panic. People's nervousness about information security has risen to an unprecedented level, and it is true that it is an era of informatization. Even in a small data space, there are a lot of personal or corporate privacy. People also more or less use some means, methods of information encryption security processing, preventive measures. Many people think that simple deletion can be foolproof, the fact is not so, the endless data recovery software has broken our thinking. It is particularly important to delete data completely and securely. It's much simpler to stop "thieves" from stealing your data from your PC, rather than making it impossible to intercept real-time data.

　　1. "Clean" the entire hard drive
the simplest, direct, and quick way to "destroy" personal information is to erase all the data on the hard drive, which is to format the hard drive.

This can be done by manual operation. On the WIN8 computer, click "PC Settings" > "General" > "Remove all the content and reload Windows", you can achieve the above operation. Windows 7 and previous system users, it is best to check the user manual to see how to set.

After the hard disk format is complete, it becomes very difficult to steal the data, but the clever hacker can still do it. To erase this data thoroughly, you may want to use the data Erasure tool Darik ' s Boot and Nuke.

Darik ' s Boot and nuke first format your hard drive, then fill it with spam and then format it again. Repeat repeatedly to eventually erase all the original data on the hard drive. Both the CIA and the military use this method to clean up useless information.

Of course, after the hard drive content is emptied, you need to reinstall the operating system and programs.

　　2. Delete only "sensitive" files
after using the method just described, the software installed on the computer is wiped off with the personal data. There is a way to remove only personal data and keep Windows systems and programs.

The simple approach is to take advantage of software such as Eraser for Windows, permanent Eraser for Mac. Like Darik's Boot and nuke, they repeatedly remove information from the computer until all the data is cleaned up.

　　3. Destroy the hard drive
If your computer is using the N-year "classic machine", I think you must have had the impulse to smash it. Now, here's the chance.

Destroying the hard drive is the most fundamental way to protect its privacy data. Therefore, if your computer hard disk no longer useful, for the prevention of data into the hands of the willing, it may be smashed into pieces.

We recommend that you still clean the hard drive with Darik ' s Boot and Nuke, and then remove the hard drive from the computer after it finishes. You can use an electric drill or a hammer, even with 20 tons of hydraulic press, as long as the drive disc damage, so that it can no longer operate.