what is in /etc/fstab and what was the disk formated as (e.g. ext2, fat32 )?
if it is msdos formated you cna use mtools if they are installed, do a mdir, mcopy, etc.
if ext2 (linux filesystem) formated then you can do a mount -t ext2 /dev/fd0 /mnt/floppy - this is a normal floppy drive, not an ls120 right?
one more thing! make sure you have the module loaded for the floppy drive, in a terminal type modprobe floppy as root.