How I use Haiku 64bit every day on a 2007 iMac (Core 2 duo, 20'')

Hi @amgpuma. This is really an old post! Sorry, I am not using anymore that iMac (although I still have it). For last years I use a Lenovo T450s with Haiku natively, generally nightly builds. So, I don’t know how most recent Haiku versions work on it.

Yes, via EFI boot. I’m gonna try a clean install of OS X and then the suggesred UEFI boot

Thanks for the update, worth to try!

It makes sense. According to my findings iMac 7,1 should have 64bit EFI instead!