How can I press <Option> on a keyboard before the Mac started up?
This article ( https://support.apple.com/en-us/HT201372 ) says that in order to startup a Mac from an external drive:
- Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac.
However: All keyboards today are wireless and need the MacOS to be installed and running before they can be selected as the keyboard for this Mac.
So how on earth can I press the Option key on a keyboard in a way that the Mac will recognize, BEFORE the MAC has started up?
In order to connect the keyboard, I need to have a MacOS, but in order to select a MacOS, I have to press a key on a connected keyboard.
This is completely impossible!
