There are those who might say that you should just spell "F-L-O-P--P-Y" since they say that floppy disks aren't floppy. Well, they used to be at one time before they started making them with rigid plastic shells--and that is good enough for me. So I use a version of the sign FLEXIBLE and then I spell "D-I-S--K." But really, who even mentions floppy disks any more? Are you doing historical research or what?
Do the sign for FLEXIBLE and then spell "DISK."
American Sign Language University ™ ASL resources by Lifeprint.com © Dr. William Vicars