Been a while since I looked at FC1, but I think you need the 1.4MB images
here. You may only need the first two unless your doing a network install or need access to a pcmcia device.
The same files listed in the link above should be found on your first CD under
images.
Do a
dd if=bootdisk.img of=/dev/fd0 bs=512 from Linux or use the
rawrite.exe in the
dosutils directory under Windows to make your diskettes.