Noisy profile hard drive

[John Lawson]

On Thu, 30 Dec 2004, chris wrote:

> I've got someone asking me about a Profile hard drive in a Lisa 2/10. He
> says it makes a loud screaming noise when it is running. Maybe bad
> bearings?


  72 years ago, I was in charge of an early 3Com LAN, with drives in 
stacked 'shoeboxes'. I came in one Monday morning to find one of the 
drives making this thin 'shrieking' noise.

   I of course did a panic shutdown and got the Vendor rolling - turns out 
that it was the Absolute Filter on top of the drive case making the same 
kind of noise that one makes by blowing across a piece of taut paper. The 
tech just pressed down on the aluminum cover at the edge of the filter 
'pod' and that fixed it.

   I was sure the heads had crashed, but somehow the system was still 
running - though I couldn't see how, since it sounded like the heads were 
milling the platters into expensive red dust.

   Maybe this is what's happening here??


Cheers  and Happy NuYeer to all and sundry!

John