take the floppy out of the drive and turn it over and look at
the back. You should see a little piece of plastic that can slide
back and forth. If you slide it one way it blocks the hole. If I
remember right that's when it's unlocked. I think with the hole open
it's locked. Like the tabs on a vhs or cassette but with the floppy
you don't break it out you slide it back and forth. on the front next
to that hole it should show something like a padlock lock showing on
lock and one unlocked. I haven't used a floppy in over three years so
I'm not sure.