Ihave two raspberry PI's one is a B+ and the other is a model 2. My problem is this with the B+ connected I can move files from my windows computer to the PI with no trouble but when I connect the model 2 I can no longer transfer files my windows pc tell me I don't have authorization or privilege to do that. My B+ is running raspbmc and the model 2 is running Xbian when the model 2 is connected I can see all the files I just can't do anything with them. Any help would be appreciated.
The user you are logged into on your model 2 doesn't have permissions on the files you see. Check which user owns them, and if they have read/write access. You can change this by logging on with the user that does have access to them and using chmod or chown (Or GUI equivalent settings)