Can Degaussing an HDD Damage It?

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Discussion Overview

The discussion revolves around the potential for degaussing an HDD (hard disk drive) and whether various factors, such as dust or contact with hands, could lead to damage or data loss. The scope includes technical explanations and considerations related to HDD integrity and failure mechanisms.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether a speck of dust or water could degauss the surface of an HDD.
  • Another participant asserts that degaussing requires a magnet, implying that human fingers would not have that effect unless they were magnetic.
  • Concerns are raised about dust causing scratches on the disk if the HDD is opened, which could lead to data loss.
  • A participant mentions that touching the platter with fingers could leave grease that might ruin the HDD.
  • There is a rhetorical question about the feasibility of refilling an HDD with helium after opening it, suggesting complications in maintaining the drive's integrity.
  • Another participant notes that data recovery companies can open HDDs in clean rooms to repair and reseal them, implying that specialized environments are necessary for such operations.

Areas of Agreement / Disagreement

Participants generally agree that opening an HDD poses significant risks to its functionality, particularly due to dust and grease. However, there is no consensus on the specific mechanisms of damage or the role of degaussing in this context.

Contextual Notes

Limitations include assumptions about the conditions under which HDDs are opened and the potential for contamination. The discussion does not resolve the effectiveness of degaussing in relation to the factors mentioned.

Who May Find This Useful

This discussion may be useful for individuals interested in data recovery, HDD technology, and the physical principles affecting hard disk integrity.

CookieSalesman
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Can a speck of dust degauss the surface of an HDD?

Or perhaps water?

If you grabbed an HDD with your hands, assuming you don't braise the surface, would THAT degauss it?
 
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Degaussing is done with a magnet so if your fingers were magnets then they could degauss the drive.

The other more likely scenario is getting a speck of dust on the drive (normally they are hermetically sealed) platter which winds up scratching the disk as it spins.

Another scenario is a head crash where the r/w head scratches the platter causing a loss of information.

More info on HDD:

http://en.wikipedia.org/wiki/Hard_disk

Check out the topic on Integrity and Failure about two thirds into the document.
 
If you have opened a HDD to expose the platters
you can pretty much write the drive off. You will never be able to remove every speck of dust before resealing the drive
And anyone of the remaining specks is likely to cause the problems jedishrfu stated in his second sentence

you don't even need dust particles, if you inadvertently touched the surface with your finger, just the grease deposit will be enough to ruin it

cheers
Dave
 
And even if you can keep all dust out and not touch the platters with greasy fingers, how are you going to refill the hdd with helium? (Rhetorical question.)
 
davenn said:
If you have opened a HDD to expose the platters
you can pretty much write the drive off.
There are data recovery companies that do open HDD's in order to repair them, reseal them, and recover data. I assume they have some type of clean room.
 

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