I upgraded my 2012 Macbook Pro to a Samsung SSD for OS and Apps. Put the stock drive into the SuperDrive slot for Home folder and everything else. All good so far... Now I want to upgrade the HDD as I need more capacity. I used CCC to clone my HDD then copied it across to the new HDD. I ran into problems when I switched the drives. Can someone explain how and if I can do this successfully? Thank you.