Start up login screen background
When I start up my Macbook I'm greeted with a background screen where my Apple ID logo is and I enter my password to log in, how do I change that screen background?
I've been into settings and only see options to change the lock screen, wallpaper & screen saver etc, but nothing to change the screen that greets me when I power up.
I've changed the lock screen, wallpaper and screen saver thinking one of them will change this screen, but alas no!
Thoughts, please.
Thank you!
MacBook Pro 13″