Thanks Jake for your quick response.
However, I do not have a problem making the device manually.
My question is why the RedHat Linux udev facility does not generate a device node for the floppy?
Looking at the udev rules, permissions and startup files it appears that the udev facility attempts to create a device node for ide-floppy. However, I think (but I am not certain) that the floppy interface on the Supermicro motherboard is not part of the ide interface.