My HP pavilion m8330f computer has two 300 hard drives (C: and E: ). I want to expand the primary partition on my C: drive to my second (E: ) drive. I've deleted the E: volume so that the drive (drive 1) is unallocated. When I right click on my C: drive in disk manager to expand the partition, the expand choice is greyed out. What can I do to expand C:? I've tried running Command Console 3.0 (which obviously is already in Windows 8), but it shows the option grayed out.