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What are the disks in older hard drives made of? |
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Aluminum with a ferromagnetic oxide coating was what the hard disk was made of in older disk drives. This was SOP back in the day. Today, we still see aluminum, but we also see glass and a couple of other minor contributors. And we've moved away from iron-based magnetic media to cobalt-based.
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First answer by Quirkyquantummechanic. Last edit by Quirkyquantummechanic. Contributor trust: 614 [recommend contributor]. Question popularity: 1 [recommend question]
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