Reviving old hard drives

From: Dwight K. Elvey <>
Date: Mon Jan 3 10:48:46 2005

>From: "Barry Watzman" <>
>SOMETIMES, the problem is that the lubricant used on the platter surface
>has, over time, effectively "glued" the heads to the platter, a problem
>called "stiction".

 Actually the surfaces have no lubrication at
all. I had a couple of friends that worked at Seagate
during the stiction problems. It was caused by the surfaces
being too smooth. When the platter stopped rotating,
the air would be squeezed out from between the two
and they would become stuck together. They solved the
problem on later drives by making the platters surface
have a specific amount of roughness.
 Machinist that work with gauge blocks understand the
stiction issue. When stacking the blocks they become
stuck together and they have to be forced apart.
Received on Mon Jan 03 2005 - 10:48:46 GMT

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