4tb hdd

nfodiz successfully applied a 1TB HDD image to a 3TB HDD and also left instructions link below. I don’t see why you can’t apply that concept to 4TB HDD from my experience you can always go up but not down 

http://community.wd.com/t5/My-Book-Live/GUIDE-Debrick-MyBookLive-v2-0/m-p/571352/highlight/true#M22568