The IDE cable I presume powers the floppy as well as the IDE hard drive that I had with my old motherboard. I presume I can't boot from that because it was on the 3.0 Workbench.
No. The floppy power cable powers the floppy. The floppy data cable connects to the floppy data port on the MB. The IDE cable DOES power a 2.5" HDD though.
