once again, the usefullness of ethernet.
have got some old 2.5" drives work was gonna chuck out, so built workbench with all its jazz on one disk, copied it to a directory on the PC via mounting the PC's c: drive on the amiga via smb-handler.
swapped hard disks. installed basic workbench, miami, cnet.device, miami config, smb-hander and dos drivers to mount pc drives, copied all the stuff back again, reboot. ta-da! full fat workbench again. hopefully get it more streamlined. maybe even script it if i get bored. boot off one floppy and restore hard disk from PC, reboot. schweet.