/doN' gl disk/ (Or "key disk") A kiNd of doNgle coNsistiNg of 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. [JargoN File] (1998-12-13)