I see Clonezilla on a list of possible alternatives. I've used that before with great success, though not with this project in mind. Alternatively, there's software called ApplePi-Baker. I haven't used it, but it looks like it was created for the exact use you're needin' it for.
Ah thanks very much.
 
	 
				 
 
		 
	 
	 
	 
	 
	
 
	 
	 
	 
	