Up until a couple of weeks ago I owned an ancient (12 year old) computer. I’d been storing the thing for years in hopes that I’d find the space to set it up (I’m actually a pack rat–I need these excuses). Well the apartment seems to be getting smaller with all this stuff, so I decided to give the computer the old heave ho–after I take it apart.
So now I’m sitting here looking at thse two metal hard disks, and I’m wondering what they’re made of. They’re maybe 2/3 to 3/4 the diameter of a compact disc and roughly the same thickness of a CD, but the metal is quite stiff; it barely bends. Any idea what they were making hard disks out of back then? FWIW, the manufacturer was CompuAdd, IIRC.