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What You Should Know About Degaussing of Hard Drives Many computer users believe that once data is deleted from a computer and the trash bin is emptied, the data disappears. However, this is not true. The reality is that the data is still in the hard drive. All you actually do when you delete such info is to destroy the path leading the actual information. Nevertheless, it is still possible to erase information completely from your HD. You can actually erase data from your computer using three different techniques. You can erase the hard drive using a hard drive eraser, you can physically destroy the drive, or you can do what is known as degaussing. Degaussing is simply permanent erasing of data. There are so many different organizations dealing with sensitive information that employ degaussing machines for this type of work. This method of doing away with data is different from others. Different from formatting or deleting information, degaussing uses special type of technology to ensure that data that was once stored on a hard drive is completely gone and never to be recovered. Here are some things you need to know about degaussing of a hard drive. Employs the Use of Magnetic Fields
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Degaussing is essentially the procedure by which a magnetic field is eliminated or decreases. In order to erase data from magnetic storage devices, there has to be a magnetic field involved. These devices have a fine coating of iron oxide and sometimes chromium oxide on the tape. During this degaussing process an intense magnetic field is generated. It is the intensity of this magnetic field that aids in permanent removal of the information stored on the iron oxide coating or the chromium oxide. The data stored on a disc is therefore destroyed completely because the magnetic field of the tape is changed. Data that was recorded is usually randomized or completely removed making during this process. This makes it impossible to recover the data.
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Safety Concerns Degaussing does not cause any harm to people’s health according to the World Health Organization. This means people shouldn’t fear being exposed to these magnetic fields during the degaussing process. The Speed of The Process Many people think the process is slow and complicated. However, contrary to what the name sounds like the process of erasing data is quick and simple. Works Differently From Hard Drive Erasers As previously mentioned, degaussing requires the use of magnetic fields to help neutralize a hard drive’s magnetic charge. On the other hand, the so-called drive erasers simply overwrite the existing data making it impossible to forensically restore or decipher. In essence, there is actually no erasing that goes on in the process.