The cable? The cable has no file system, its just a cable.
Under Windows, a floppy drive is always formatted using the FAT 12 file system.
Floppy disks use a FAT file system.
That varies with OS, but FAT is currently the most common for floppies.
FAT (also known as FAT12).
To copy a file from the desktop to a 3.5 floppy disk, first insert the floppy disk into the disk drive. Then, open File Explorer (Windows) or Finder (Mac), locate the file on your desktop, and right-click on it. Select "Copy," then navigate to the floppy disk drive, right-click inside it, and select "Paste" to transfer the file. Ensure that the floppy disk has enough space to accommodate the file.
FAT or FAT32.
I suppose technically... if you locate the cookie on your hard drive and copy it as a file into the floppy drive.
FAT12
A floppy drive is just like a flash drive. It's used for file storage
FAT (File Allocation Table)
Format a: /s will format the disk in the first floppy drive and copy the system files to it, making it a bootable disk.
Any file system can be used by a floppy disk, as long as the minimum partition size of the file system does not exceed the capacity of the floppy. FAT12 is the most common on Windows / MS-DOS computers. AFS was common on earlier Macs. ext was used among many Linux users. Floppy disks can use a variety of file systems. On MS-DOS and Windows computers, the primary file system for floppies is FAT12. On older Macs, the file system was HFS or MFS. Linux computers sometimes use ext.