It might be possible to hook up the 8" drives to
a PC but choose the 1.2 meg
5.25" option in bios but I don't know. It probably wouldn't work but
I'll
let someone else confirm that.
It works. just a matter of cabling, as the 1.2M is virtually
indistinguishable from 8". But cable it as drive B:, because some BIOS's
will have a problem with it not having a 360K mode.
And 5.25" 720K and 3.5" 720K are direct replacements for each other.