See our video below to find out why you should never open a hard drive.
Instead of a needle, hard drives use tiny magnets to read and write data. The heads don’t actually touch the disc.
But you’d only see that if you got close
The heads float just three nanometers above the disk
In comparison, a spec of dust in the air is 166 times bigger than the gap.
It would be like trying to kick a football through a gap the size of an ant
So if that giant spec of dust can’t fit through the gap, it will hit the read head
Bouncing it into the disc spinning at over 100mph
And scraping away chunks of disc within seconds
Up close the tiny scratches look like mountains
The heads can’t get past the damage so just scratch it even more
Until there’s nothing left but dust
This is what we call a head crash
And This is Why You Should Never Open a Hard Drive! (Unless You Have a Cleanroom)