>This process only works with an FD-4000 drive. If you convert an HD disk to ED format, you won't be able to run over to your NeXT machine and start using like a NOS ED disk. My understanding is that this conversion only works with FD-4000 drives.<p>nah, it works with most ED drives <a href="https://ardent-tool.com/floppy/floppy.html#2.88_Floppy_Hack" rel="nofollow">https://ardent-tool.com/floppy/floppy.html#2.88_Floppy_Hack</a><p>"I can also format 1.44MB media to 2.88MB without drilling an extra hole in it. In fact, all media is automatically formatted at the drive's native capacity unless forced with the /F switch."<p>"1.44MB media seems to work well at 2.88MB. It formats error-free and seems to hold data with no problem. I am doing some long-term testing to see if it will retain data. "