whdload won't work on the mini unless you include the code for us to put in the start of the xml file. Turrican 2 AGA, Maria Renard's Revenge, Creeping Me Out and Castlevania AGA have all done this.
But what about an HDDinstaller, for the Workbench, splitted on multible Disks? (I'm not aware of the fact, how much work and time something like this would take, so please forgive me, if thats an super silly idea, hehe)