Using Amiberry WHDBooter with RetroPie (Step 3)
Files supported by the Amiberry WHDLoad booter are the 'pre-installed' WHDLoad games. The most common of these are those which are distributed as "Retroplay's WHD Games"
You are going to need place your game files into the roms section of RetroPie. These should be in the 'LHA' format, which is essential an Amiga ZIP file.
/home/pi/RetroPie/roms/
The .lha files here should be placed directly into:
/home/pi/RetroPie/roms/amiga
An example of LHA games installed on RetroPie, via OSX
When copying across files directly onto memory cards, it is recommended to ensure the ownership permissions have been retained. RetroPie itself includes an option for this in it's own settings/config menus called "Restore Ownership of /pi/roms" or similar.
You can do this manually from the command line with the following;
sudo chown -hR pi:pi /home/pi/RetroPie