Many computer users believe that once data is deleted from a computer and the trash bin is emptied, the data disappears. But that is further from the truth. Fact is that the data is still in the drive. In fact, all one does when they delete such information from their computer is to erase the path that one can use to access the information. However, it is actually possible to erase data from your computer hard drive. One can erase data from their computer hard drive in three different ways. You can use a hard drive eraser, you can physically destroy the drive and finally, you can degauss the hard drive.
Degaussing simply put is complete erasing of information on a drive. 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. Learn how to degauss a hard drive here!
makes Use of Magnetic Fields
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. previously recorded data is either removed or randomized during degaussing. This makes it impossible to recover the data.For further details regarding hard drive degaussing, check out https://www.youtube.com/watch?v=VBISNP7gVbY.
According the World Health Organization, there is no evidence that suggests any kind of harm can come from this type data destruction. This means people shouldn’t fear being exposed to these magnetic fields during the degaussing process.
Speed of the Degaussing Process
The process of degaussing might sound complicated and slow. Nonetheless, contrary to what the name may sound like, this process is actually easy and fast.
Difference from Hard Drive Eraser
As aforementioned, degaussing, works with the help of a magnetic field to reset the hard drive’s magnetic charge to a state that is neutral. Conversely drive erasing is where data degaussing that is on a drive is overwritten so many times that it becomes impossible to access decipher or restore forensically. Unlike the name suggests, there is no type of erasing that goes on when using HD erasers.