Yep, if your F: is 12GB, then the fireball is that drive. Unfortunately, the Quantum company has changed hands a few times, and the current owner (seagate) no longer supports the Quantum drives.
I did find the original quantum fireball series hard disk utilities at:
http://www.technotronic-dimensions.com/quantum.htm
At the bottom of the page is the quantum zero fill utility stand alone boot disk. Just download that, run it, insert a blank floppy, and wait for it to say finish.
You will then have to restart your computer with this disk in the drive, and make sure your computer is set to boot from floppy before hard drive (
http://compreviews.about.com/cs/pchardwarebasics/a/aaBIOS_2.htm). Then follow through the program. Make sure that it doesn't zero-fill the other drive (it should auto detect, but if it starts giving you choices of drives, make sure to select the one with the model number that you gave us earlier).
Hope that helps.
Edit: you can also use a generic zero-fill program like wd_clear (google is your friend) to clear it out, but they generally dont work as well as one designed for the hard drive itself.