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What One Should Understand About Hard Drive Degaussing A lot of people think that once a file is deleted to the trash bin and the bin is emptied the info disappears completely. But that is further from the truth. Fact is that the data is still in the 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. There are actually three different ways to erase data from a computer hard drive. One can physically destroy the drive, use a hard drive eraser or use degaussing to clear the drive. Degaussing simply put is complete erasing of information on a drive. With so much sensitive information being stored on hard drives out there, organizations require a way of being able to securely do away with sensitive data completely. This method of erasing is unlike any other method of erasing data. Unlike deleting and formatting, degaussing completely clears information by the use of a special technique. Here are some things you need to know about degaussing of a hard drive. Uses Magnetic Fields
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Degaussing is essentially the procedure by which a magnetic field is eliminated or decreases. This means it requires magnetic fields in order to erase information from magnetic storage devices such as discs and tapes. Magnetic storage devices have very fine coatings of iron oxide as well as chromium oxide that sit on the tape. During this degaussing process an intense magnetic field is generated. The immense power of this magnetic field is what aids in the permanent removal of the magnetic memory from the chromium oxide or the iron oxide coating. The data stored on a disc is therefore destroyed completely because the magnetic field of the tape is changed. During this process, the recorded data pattern is either removed or randomized. This is why the data can never again be recovered.
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Safety of the Process As per the WHO degaussing is completely harmless to people’s health. This means the exposure to magnetic fields during the process is not to cause alarm. Speed of the Degaussing Process Many people think the process is slow and complicated. However, unlike the phonetics might insinuate, the data destruction process is one that is quite simple and quick. Difference from Hard Drive Eraser As already highlighted degaussing uses the help of a magnetic field to neutralize the magnetic charge in a drive. 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.