[Coco] HDB-DOS and a green newcomer (me)

[Spencer]

Greetings all.

Got a few questions:
1)  Is HDB-DOS required for Drivewire?

2)  Just received a FD-502 controller with the HDB-DOS eprom.
Who sells the HDD interface card for the CC3?  Can I buy any 30-100MB drive (or other capacity) to work with the interface?

3)  Now that I have the 502 controller and the eprom how do I format a physical floppy disk?    I tried using DSKINI 0 and it tells me it's about to format a hard disk.

Thanks!