Create a blank floppy image in Mac OSX 10.6

  • dd if=/dev/zero bs=1024 count=1440 > floppy.img
  • Disk Utility -> File -> Open Disk Image -> floppy.img (you will get an error like no mountable filesystems)
  • Select floppy.img in Disk Utility, and the erase tab
  • Select MS-DOS FAT as the format.
  • Eject floppy.img

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