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Old 12-05-2009, 04:10 PM   #1
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Default Degaussed Hard drive

Ok so i've got a task. I've got a Hard Disk that has been Degaussed. From what i understand is the hard disk has notches inside the drive that reads and writes the information. When the hard drive is degaussed the notches are completely erased deleting all the data, making it basically useless. My task is to find out how to put the notches back, either by restoration (if possible) or manually doing it my self. So that the hard disk can be used again. I dont have to actually do it i just have to find out how you would do it. Also i was told that NASA and other corporations use degaussing to clear their disk before they get rid of them. So i would assume that it would be impossible to get the data that was originally on the disk back, so at this point i just need to figure out how to get the notches back to where the hard drive can be used.
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Old 12-05-2009, 04:27 PM   #2
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Default Re: Degaussed Hard drive

As far as I know when you degauss a hard drive its pretty much useless. Although it will depend on the strength of the magnetic field and its orientation.

And degaussing is a very deep erasure process. Servo tracks on the disk platters are also demagnetized so no reference points for the heads.

Good luck.
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Old 12-05-2009, 04:40 PM   #3
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Default Re: Degaussed Hard drive

Yea what im needing to find out is how to rewrite the servico tracks
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Old 12-05-2009, 04:41 PM   #4
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Default Re: Degaussed Hard drive

Huh, I never heard of a HDD being degaussed. Interesting.
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Old 12-05-2009, 04:59 PM   #5
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Default Re: Degaussed Hard drive

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Originally Posted by Davinci720 View Post
Yea what im needing to find out is how to rewrite the servico tracks
Its a process done before they leave the factory.

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Originally Posted by Atomic Rooster View Post
Huh, I never heard of a HDD being degaussed. Interesting.
Large companies do it to get rid of delicate infomation. De-magnetizing and physically destroying the platters is a great way to ensure hard drive death.
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Old 12-05-2009, 05:13 PM   #6
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Default Re: Degaussed Hard drive

so basicly onlyway to get servico tracks rewritten is in the factory?
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Old 12-05-2009, 05:17 PM   #7
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Default Re: Degaussed Hard drive

I just Googled this and I dont think its something you or I can do. So it would have to go back to the factory.
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Old 12-05-2009, 05:22 PM   #8
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Default Re: Degaussed Hard drive

yea i've been trying to google it and not much about actually getting the HDD working again, all info about actually degaussing it
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Old 12-05-2009, 05:27 PM   #9
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Default Re: Degaussed Hard drive

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yea i've been trying to google it and not much about actually getting the HDD working again, all info about actually degaussing it
Probably because it's pretty much impossible to get it working again.

Unless your sure the HD has been de-magnetized i'd at least try it in a machine.
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Old 12-05-2009, 05:42 PM   #10
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Default Re: Degaussed Hard drive

what about if it has been de-magnetized
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