Cheers guys, it was a bit of a project that I never really finished to my satisfaction. Life got in the way. There were a couple of other pages planned – one of which was going to be on the very subject of the Vista created partition offset. There is also a couple of other issues I've yet to see mentioned anywhere (they have nothing to do with the topic of this thread – I don’t think) and plenty of other points to be expanded on, as well as a bcdedit.exe guide for creating new GUIDs. Hopefully I’ll be able to get back to it shortly.