Little black balls in an old hard drive

7yo daughter and I took apart an old dead hard drive. Inside the casing to one side there was a small rectangular plastic 'pot' with a sort of fibrous tape cover. Containing a load of tiny ( 0.5mm diam ?) black balls.

They appear to be graphite - non magnetic and can be crushed. But couldn't work out very obviously what they are.

Anyone know?

Reply to
chris French
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Some sort of desiccant perhaps? I've not seen a black one but it might explain the porous cover.

Bob

Reply to
Bob Minchin

Charcoal filters, I would think.

Scott

Reply to
Scott M

Might be part of the breather system.

Years ago I dismantled a very larger HD found in a skip outside a game publisher. It had a wet/dry breather system for the drive. Most dinky thing I have ever seen with the usual filters and a liquid bath in a minute clear plastic module.

Reply to
Ericp

From

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:

"activated carbon pellets, as a dessicant and to absorb any other airborne fumes from material outgassing, to prevent them from depositing on critical locations such as the media surface"

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Reply to
D.M.Chapman

In message , D.M.Chapman writes

Ah thanks, now we know :-)

Reply to
chris French

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