https://makezine.com/article/technology/computers-mobile/mac-os-x-panther-on-a-25m/
Mac OS X Panther on a 25MHz Centris 650 - Make:
Oct 9, 2006 - Danamania is attempting to run Mac OS X on an old 25mhz Mac, should only take one week to boot up, nice - "The victi-WMac used for this little project is
mac os x panthercentris 65025mhzmake