To use KFloppy you must have either a 5.25" or 3.5" disk drive connected to your system. Insert the disk you want to format. Do not mount it. Then, select the appropriate options as described below.
Select the drive that contains the disk you wish to format. For those of you not familiar with PC drive labelling conventions, letter A: corresponds to the fd0 device and B: is the fd1 device. Almost all new computers will only have one 3.5" floppy as their A: (fd0) drive.