A Floppy Disk is a storage device for files or programs in ComputerCraft. It is used by inserting it into the GUI of a Disk Drive.
Normally your computer or turtle has a rom directory in the main root(/), but if you put a Disk Drive beside it with a Floppy Disk inside, you also get a directory call disk.
To change the Floppy Disk's item name, use: label set <side - left, right, top, bottom> <name> Example: label set right My Turtle
You can backup your programs to the disk with copy command. Example: copy mygame disk/mygame
Other directory and file commands like list, cd, move, and delete works in the disk directory too.