Things You Should Know About Hard Drive Degaussing Lots of PC users believe that when one deletes a file and empties the trash bin, the information is completely erased. However, this is not true. The truth is that you have not done away with the information. All you actually do when you delete such info is to destroy the path leading the actual information. Nonetheless, one can still be able to erase info completely from their hard drive. There are actually three different ways to erase data from a computer hard drive. 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. Degaussing is very popular considering the amount of sensitive information the needs to be permanently erased by various organizations. This method of doing away with data is different from others. Degaussing is not like simple deleting or formatting, it uses a unique technique to clear data completely. Below are some fact s you should know about hard drive degaussing. Employs the Use of Magnetic Fields
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Degaussing is pretty much the elimination or decrease of a magnetic field. This means it requires magnetic fields in order to erase information from magnetic storage devices such as discs and tapes. 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. The magnetic memory stored on either the chromium oxide or the iron oxide is done away with completely because of the immense power of the magnetic field produced. The data on the disc is completely destroyed as a result of the change in the tape’s magnetic field. 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 Issues 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. The Speed of The Process The process of degaussing might sound complicated and slow. However, unlike the phonetics might insinuate, the data destruction process is one that is quite simple and quick. Uses a Different Concept from Hard Drive Erasers As already highlighted degaussing uses the help of a magnetic field to neutralize the magnetic charge in a drive. Hard drive erasers however, actually work on the principle of overwritten data, once the data is overwritten enough times it becomes impossible to forensically recover it or even decipher its meaning. Essentially, no erasing actually goes on in this process.