2M seems to be insufficient to execute standalone on RAM, I don't know the
exact resean now.
So I'd like to extent the size of floppyinstfs from 2M to 8M.
What should I change?
Should I change disktab?

floppyinstfs|NetBSD floppy install filesystem:\
        :ty=floppy:se#512:nt#1:rm#300:ns#64:nc#64:\
        :pa#4096:oa#0:ba#4096:fa#512:ta=4.2BSD:\
        :pc#4096:oc#0: