For the purists: You want to install your own Amiga operating system onto an HDF. This is the "install" part of "amiga hdf install download."

Once you have downloaded your .hdf file, follow these steps to mount it in common emulators: Winuae HDF file setup instructions needed - Facebook

Extract it to your HDF using Directory Opus or the Amiga Shell. Double-click the game icon to play.