I have an old Mac Mini on which I installed Ubuntu to be used as a test server. I completely formatted the hard disk before installing ubuntu, installation went fine and everything is working; so far so good.
The problem is that when I access the machine via ssh, and do a reboot, it doesn't reboot.
I get the message "going to reboot NOW" then I get a black screen as if its rebooting but then nothing happens. The machine is still running, but it is as if no restart signal has been sent to the bios.
So I found the problem. The machine simply won't start without a monitor attached to it. A keyboard is not necessary, but a monitor is a must.
I tried looking around how to access the bios in mac-mini and it looks like mac has no bios but instead has Apple Open Firmware, which can be accessed by pressing Cmd + O + A. I have a standard Windows keyboard so I tried pressing windows logo key + o + a but it doesn´t seem to work
So now I'm trying to find out how to start a Mac Mini without a monitor attached to it.