It depends on the motherboard but often the SATA/RAID drivers are not just copied directly from the CD to the floppy. Motherboard driver CDs often have drivers for different chipsets and different operating systems. In these cases a utility program on the CD is used so you can select the correct drivers which will fit on the floppy diskette. Directions on how to make the SATA driver floppy are usually in the motherboard manual.
It would be better if we knew what motherboard you have.