iMac Late 2009 - Bluetooth and USB keyboard and mouse do not work on Big Sur installation screen · Issue #43 · barrykn/big-sur-micropatcher · GitHub
Mac OS Catalina en un Mac no compatible: Guía de instalación - Flopy.es
Got a iMac Late 2009 model A1311 for a very good price, made a bootable USB drive for El Capitan and this shows up. any ideas? All help is appreciated : r/osx
Got a iMac Late 2009 model A1311 for a very good price, made a bootable USB drive for El Capitan and this shows up. any ideas? All help is appreciated : r/mac
Boot Camp y cómo instalar Windows en una unidad USB
iMac 2009 Bootloop while trying to load i… - Apple Community
iMac won't boot from USB, white screen + … - Apple Community