sudo nvram enable-legacy-orom-behavior=1
, then press Return.sudo nvram -d enable-legacy-orom-behavior
.sudo firmwarepasswd -setmode command -allow-oroms
sudo firmwarepasswd -setmode command
.System Information
in Lion or later (or System Profiler
in Snow Leopard and earlier versions of Mac OS) in Spotlight (press ⌘ and Space). Device Manager
on Windows.
->About This Mac
->More Info...
->System Report...