Recently I cloned the data from a 750 gb Seagate Hard Drive to a better 1 tb Western Digital Hard Drive using a program called Macrium Reflect. The transfer worked, but for some reason Reflect has capped the amount of data I can use on the new hdd. Basically, I can only use 750 of the 1000 gbs. When I open Reflect, it shows the available 750 gbs with another 250 grayed out and un-usable. Please tell me how to fix this.