Even in the 80s when I was a fresh-faced young programmer the hard drives we had in the computer room were the size of washing machines. I don’t remember how much data they held but it was 100MB or less. A disk pack was a stack of disks more than a foot in diameter, stacked on a hub, with gaps for the read/write heads to reach in. The pack had a clear plastic cover, like for a big cake. You would lower it into the drive, twist the handle to lock it in, pull out the cover and close the lid, just like on a washing machine.
Even in the 80s when I was a fresh-faced young programmer the hard drives we had in the computer room were the size of washing machines. I don’t remember how much data they held but it was 100MB or less. A disk pack was a stack of disks more than a foot in diameter, stacked on a hub, with gaps for the read/write heads to reach in. The pack had a clear plastic cover, like for a big cake. You would lower it into the drive, twist the handle to lock it in, pull out the cover and close the lid, just like on a washing machine.