It can get boot device every time I'm stuck at "BootCacheControl: Unable to open /Var/db/BootCache.playlist:2", if I get over it, it won't happen, weird thing. So basicly, with GraphicsEnabler=No and -f flags it doesn't even want to mount root device. It looks like HackBoot fixes one thing, causes other one.
//im editing it over and over coz im a bit sleepy