Dongle-disk /don'gl Disk/ N. A Special Floppy Disk That Is Required In Order To Perform Some Task.

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dongle-disk /don'gl disk/ n.

A special floppy disk that
is required in order to perform some task. Some contain special
coding that allows an application to identify it uniquely, others
are special code that does something that normally-resident
programs don't or can't. (For example, AT&T's "Unix PC" would
only come up in root mode with a special boot disk.) Also
called a `key disk'. See dongle.

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