Also once you use farfary's preinit, it replaces the previous preinit so there is no such thing as a clean installation...You are replacing one file with another...

If you still want to do so just delete /sbin/preinit and then use farfary's preinit after that...


Edit: Think of preinit as a boot-menu type of thing...By default the n9 will boot into meego but preinit will intercept the regular boot and give you options to boot into a particular OS...Also you can imagine it as something like installing Ubuntu on Windows...You would need GRUB to be able to boot into Ubuntu but if you don't have GRUB properly configured it'll boot into Windows by default...Same thing here...