I'm a novice with all things Apple and have run into a bit of trouble following the guide for 10.9.4. I managed to get a Virtualbox install up well enough to fetch the installer.app and thus follow the guide up through most of phase 1, but when booting from the prepared USB disk on my T420 (which has the same resolution and integrated graphics as tluck's), Clover runs, but OSX forces a halt after the cursor appears on a grey screen after the Apple logo would normally disappear during install. I've tried a bios reset and another disk to write it to.
I have the feeling I've overlooked something, but can't seem to find it in spite of my aptitude of handling other Unix-like OSs. I would greatly appreciate any help in trying to get up to speed with this procedure and get it to work!