I have the Imation SuperDisk drive connected to my iMac G3 DV400 (running 10.2.8) right now! I have had success using both the normal, Mac formatted floppies and the iMation SuperDisk Floppies. Here is what I would recommend for flawless performance from this drive.
First if you have a stuck diskette...
1. If you have a diskette stuck in the drive, drag the SuperDisk icon from your desktop into the trash. If that doesn't eject the disk, logoff of your computer, unplug the USB cable from your computer that is hooked to the SuperDisk and locate the disk eject button on the front right hand side of the SuperDisk Drive. If pushing this button does not eject the disk, unfold a paper clip and insert it into the tiny hole in the end of the eject button.
IF THIS FAILS TO EJECT THE DISK YOUR DRIVE MAY BE FRAGGED...
If there is no disk in the drive...
2. with no disk in the drive the most consistent, trouble free method I have found to have my computer find my SuperDisk is to wait until after I have inserted a disk of known origin to connect my USB cable. If I connect it within about thirty seconds or so after the drive reads the contents of the disc, the SuperDisk icon always appears on my desktop, ready for my commands.
I hope this is of some help to you. I think the SuperDisk is pretty cool, although it is slow by some standards, and a bit noisy (especially when you are trying to be very quiet!!), it has been well beyond the needs of backing up my personal files and work files as well. I have several years of my work as a writer on a single SuperDisk, with room for two or three more to go!!!