i got a 4TB external hard drive with external power source for my windows 8 64 bit laptop but when I'm in disk management its separated into two different sections. i before hand deleted the volumes on it cause it was not recognizing it on my computer but when i deleted them all it left me with two sections one 2048 GB another 1678.2 GB and they both say unallocated. i can use the 2048 GB one all of it but the 1678 GB i cant seem to set up as a volume. so whats happening here? someone please help. TY SOOOO much for the help!!