The ubuntu boot: prompt to be useful would need a single beep as it appeared on the screen and a short double beep when it left the screen. This way totally blind users with some useable hearing would be able to gauge when to do the keyboard commands to get ubuntu talking. For the existing boot prompt, first is it possible to choose two accessibility options and what number would be usd to disable mouse input? I need to get a rather large track ball to replace the mouse since that mouse ends up getting knocked around the desk and when hooked up gets me into no end of trouble with software.