I'm trying to install Snow Leopard (the version by Hazard) in VirtualBox, re the instructions at How to Run Mac OS X in VirtualBox on Windows. However when I try to boot from the .iso with verbose mode it gets to

BSD root: disk1s2, major 14, minor 3

and then stops. There is an error a few lines up that says

SMC::setPowerState ERROR: smcWriteKey NTOK failed (unknown result code), will not receive interrupts

but I'm not sure if that's relevant. Does anyone know what may be causing this?