Thanks!

On Monday, December 11, 2017 10:04:09 AM Joe wrote:
> On Mon, 11 Dec 2017 09:16:35 -0500
> 
> [email protected] wrote:
> > (Did hard disks ever use iron oxide?)
> 
> The rigid platters of IBM cartridges and packs (the things you see in
> computer rooms in films) did have brown oxide coatings. The surface of
> each 12 inch platter side stored a magnificent 2.5MB, or at least the
> version I used did. It was used in a system with an embedded DG Nova,
> and a competitive product of the time used the modern 8 inch floppy
> discs...

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