Bootable Qt-Linux Application

Question

How to boot a linux kernel + dependencies and auto run a Qt application so the linux environment doesn't show up (only the Qt GUI is visible)?

on x86 PCs

should be able to run from RAM (of course)

Answer 1

Perhaps you could look at how this guy did it:

http://www.embedded-bits.co.uk/2011/1-second-linux-boot-to-qt/

Answer 2

You could start with a minimal linux distribution such as Ubuntu Server and install only X-Windows (without any Window Manager) on top of it: https://help.ubuntu.com/community/ServerGUI

Then, start your Qt application by adding a call to it in the .xinitrc initialization script.