Supposedly Bernie ][ the Rescue should be able to write floppies, although there seem to be some noise about disk exchange being less than completely reliable. Just checking: when you try writing a disk are you using a real double-density 3.5" disk, or are you trying to use a high-density floppy? A non-Superdrive SE is going to ignore the difference between the two but a Power Mac is going to care. (You may already be aware of this if you've been transferring data to the SE, but figured I'd bring it up. Your SE is the non-Superdrive equipped one, right?)