You can do it but it is tricky, you can search on the net, but basically you take a ADF that is zipped, copy to a 720k PC disk, have a OS on the A500 that reads PC disks and unzip the adf to RAM: then write the ADF to a real disk. Problem is you need a Workbench disk with CrossDOS or other PC filesystem and atleast 1MB RAM. Good luck.