Hi all, 
  
My first post!  
  
I haven't used Norton Ghost on a PC based DVR (I just don't have one!  ) but I am using it on my home PC. What I usually do is to do a fresh install of the OS, then boot it into DOS with a boot disk and create an image on  another partition. When I am sick of all the craps that I install over the months, I boot it to DOS again and restore it to the original state. All it takes is 5 mintes which I reckon that's pretty quick compared to reinstalling the whole OS for more than 1/2 hr. 
  
Hope this helps! 
  
Cheers, 
  
LK