The procedure that I followed to dual-boot requires that I copy the boot sector from the Linux partition on my hard disk to the Windows boot drive (C

before I can boot to Linux.
Since I do not have a shared FAT partition, I need to copy the boot sector onto a floppy which is USB connected. I am still not able to boot Fedora yet therefore no X Windows and Nautilus.
I need to know what is the device file for USB floppy when I boot in Linux Rescue mode.
Thanks.