Back in '89 I added a 80meg HD to my 80286 12mhz 1meg RAM 20MB MFM hard drive. The addon drive was mounted on a full slot ISA card.
Does anyone know of a company that still makes such a beast. I'm sure with USB external drive there is not much use for such a device.
I thought a PCI card with two micro drive slots flush mounted, may make devices with no room for standard 3.5" or 2.5" more expandable. Considering the micro drive are getting up to 32 gb.

Story on 32gb micro drive

EDIT: I did not mean a 80med hard drive. A PCI card that a drive could be mounted directly to.