Smart Update problem
 

I know that SD is not completely compatible with SD, but i have first erased and cloned the drive. Tonight i am on my second go around with SU. However just like the first, it is reading the HDD and considering about 90% of the data new and taking about 2 hrs to perform. Why is it doing this, i haven't really changed anything as far as files go and i don't have time machine set up?

This is part of the incompatibility...