PowerBook 1400, 200, 2300: Disk Copy Needs Floppy Drive Error

I have a Powerbook 1400 series computer. I need to make some duplicate back up application floppy disks. I tried to make disk images with Apple Disk Copy 4.2, but it tells me that, "This Macintosh cannot use this version of Disk Copy. Certain required support is not provided." What does this mean?
You are probably getting this message because you have an expansion bay device in your PowerBook other than the Floppy drive. For example, if the CD-ROM drive is installed, you need to eject the CD from the bay and close the bay door. Choose Sleep from Special Menu, remove the CD-ROM drive from the computer, and insert the Floppy drive module into the computer.

The Disk Copy utility program checks for the presence of a floppy drive. If there is not a floppy drive, you get a message that it "will not run on this kind of Macintosh computer since certain required support is not provided." You can get this same message on PowerBook 200 or 2300 series (Duo) computers that do not have a floppy disk drive attached externally or in a docking station.

Later versions of Disk Copy do not report this error message. The latest version can be downloaded from the Apple Software Updates Web site at http://www.apple.com/swupdates.

Published Date: Feb 18, 2012