I have a Dell Lattitude E5520 laptop that I am replacing the 500 GB drive with a 2 TB drive. The system will accept the size and to be sure I've partitioned it into 3 partitions. My problem occurs when I try to clone the existing drive over to the new one. I started with Acronis True Image 2012. When I try to clone the drives, the new drive, connected via USB, shows up in the Source, but after selecting the original drive, the new drive is grayed out in the destination section. I tried swapping them around, but it was grayed out even as the system drive. I borrowed a copy of True Home 2015 with the same results. This would be the first time Acronis didn't do the job. I did check that UEFI wasn't being used by the system, but I'm still spinning my wheels as to why this isn't happening. Ideas?