I have a brand new mac mini (core i5). I've yet to install OSX. I'd like to install OpenBSD from a USB drive. I do not want to dual boot, just run OpenBSD.
I used a different machine to transfer the amd64 install52.iso to a USB drive using
dd if=install52.iso of=/dev/disk. I can mount the USB and the contents look good. However, I can't seem to get the mac mini to boot to the USB drive. Holding
alt down during boot shows two partitions (one rescue one normal) but not the image on the USB drive. Holding
c when booting doesn't seem to do anything but delay the boot of the OSX installer.