I just successfully installed F9 on an old machine for a friend. During the installation, I chose US Dvorak as the keyboard layout (I can't type QWERTY). I thought that returning it to standard US layout would be a simple matter ... just go into System>Preferences>Hardware>Keyboard (this is Gnome) and re-set the keyboard.
But, I forgot that this would only change the session/user keyboard. Now on startup, the login expects my friend to type in his password in Dvorak still - of which he hasn't got a clue.
So I need the method to change the keyboard layout to standard US qwerty completely, and globally. (short of re-installing)
I've of course told him which keys to hit on his keyboard to spell out his password as if he were at a Dvorak layout, and also that typing ossk would produce the word "root", but this is only a temporary solution.
Once he's at his Desktop after his log-in, everything is standard US, so that's not a problem.