http://obligement.free.fr/articles/morp ... lation.php
(presenti molti dettagli interessanti, per es. io (per mia ignoranza) non ero a conoscenza della ottima possibilità di installare MorphOS 2.5 direttamente dalla ISO senza masterizzare il cdrom

"3.1 Starting since the ISO
If you have a previous model of MorphOS 2.x, you will be able to install MorphOS 2.5 starting from the ISO file, without engraving it. But attention: a bad handling could block you here. Ridges this only if you are sure of what you ridges.
Thus to start since the ISO, it is initially necessary to recover the file “boot.img” which is on the ISO de MorphOS 2.5. Double-click on the ISO, locate the file “boot.img” (or “bootefika.img” or “bootpeg1.img” according to your machine) and copy it, under the name “boot.img” from your partition where it there already this file, in its old version. Then, place the file ISO de MorphOS 2.5 at the root of a partition (for example “work”), then réinitialisez your machine, enter the Open Firmware (“Esc touches”) and type:
boot boot.img bi=work: morphos-2.5.iso")
buona lettura e buon divertimento con MorphOS

ciao