aek at bitsavers.org
Sat Dec 16 15:58:11 CST 2006
>I could imagine that some of the lubricants that they used on the
>surfaces could have contributed to stiction. Although, the heads do
fly >when at speed, they do have to drag on the surface. For this they
also >put a very thin layer of lub on the surfaces.
Billy Pettit has been surprisingly quiet about all of this...
The one case of lubricant stiction I know of for a fact is in Quantum
Q540. Apple had a huge field failure problem because of this in HD40s.
They modified the firmware to giggle the head on powerup to help prevent
landing zone lubricant accumulation.
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