It's the first time I try to install MorphOS 3.20 via USB (because I don't have any blank CDs left), but I couldn't find a way to do so.

What I did:
- Download the USB boot image from morphos-team.net (morphos-3.20-hybrid.hdimg)
- Write the image on a 4GB-USB-Stick (sudo dd if=morphos-3.20-hybrid.hdimg of=/dev/rdisk4 bs=4m)
- The USB-Stick is recognized by my MorphOS 3.18 installation, but unfortunately you can't do the install from there (see attached screenshots)
- When entering the Boot-Menu of the Mac (pressing the "alt" key) there is no USB-Stick from where I could boot
- Using Open Firmware I didn't succeed booting from the USB stick, the documentation (https://www.morphos-team.net/guide/usb-boot) is very strange, because it descibes how to create a new boot media and there isn't any reference to the .hdimg-file you downloaded before.

ME1DM7NJ_t.jpg ME1DM7NK_t.jpg