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- Feb 15, 2011
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- 13in rMBP 2014 Yosemite
I remember back on my parents Gateway Millennium edition PC the monitor had a degaussing button. Never really had a use for it or understood what that meant until college.
Now I work in radiology and have a more than basic knowledge of MRI units.
I have been wondering-what are the standard ways to wipe clean a hard drive?
I always assumed a drive would be plugged into what ever peripheral it needed and somebody would hit reformat on a home base computer. I come to learn there are certain levels of security- just in OS X we can select an option that will take 15 hours or something to write a zillions zeros on your hard drive. Or just 30 seconds and then it's "empty" again but with out it really being blank.
Wouldn't a very strong magnetic field do the trick much faster and just as "secure"?
The Magnet in my hospital is average at 1.5 or 2.0 tesla. From what Google showed me that's about average for degaussing magnets available for purchase. If you have enough current/amps there isn't really a limit to what people can push through a magnet. Some research hospitals have 10 T magnets. And from an episode of myth busters I think there are magnets up near 45 T
I get that it may not be cost efficient to have a liquid helium super cooled magnet for a business to wipe clean hard drives. But wouldn't it be more efficient time wise?
Sorry for rambling.
Now I work in radiology and have a more than basic knowledge of MRI units.
I have been wondering-what are the standard ways to wipe clean a hard drive?
I always assumed a drive would be plugged into what ever peripheral it needed and somebody would hit reformat on a home base computer. I come to learn there are certain levels of security- just in OS X we can select an option that will take 15 hours or something to write a zillions zeros on your hard drive. Or just 30 seconds and then it's "empty" again but with out it really being blank.
Wouldn't a very strong magnetic field do the trick much faster and just as "secure"?
The Magnet in my hospital is average at 1.5 or 2.0 tesla. From what Google showed me that's about average for degaussing magnets available for purchase. If you have enough current/amps there isn't really a limit to what people can push through a magnet. Some research hospitals have 10 T magnets. And from an episode of myth busters I think there are magnets up near 45 T
I get that it may not be cost efficient to have a liquid helium super cooled magnet for a business to wipe clean hard drives. But wouldn't it be more efficient time wise?
Sorry for rambling.