🚀 go-pugleaf

I ran into a problem installing MSDOS 5.0 that's not in the manual.

I started it by typing a:setup and when it got to the place where it
makes the "uninstall" disk I followed the instructions and inserted
a blank floppy. It spun around a bit and then a box came up that said
something like:

	Incorrect Drive, hit any key to continue. (not the exact wording)

I tried a couple of other disks, all with the same results. Finally I
remembered one occasion in the past where some program continued to read
from the disk cache even after I changed disks (usually it works just fine).

I removed Hyperdisk from my config.sys, rebooted and everything went fine.