I want to open the firmware settings. I have a Mac book Pro end 2011 and yosemite.
When i press Option+Cmd+O+F while booting nothing happens, it continues to boot.
What do i have to do?
i want to install ubuntu but i get black screen. Here is writen that you have to change something in the settings.
In section "3. Black screen" it is written:
The picture above actually only confirms DVD/USB booted using UEFI and there will be some means in firmware settings to ensure drives are booted in order to make UEFI installer run - the solution to which may possibly be as simple as ensuring SATA set to AHCI - check your vendors manual to check this. Also check UEFI Community Documentation Section 2.3 for more details.