I recently built a new system with Win7 Home Premium on an OCZ Vertex 4 and a Seagate Barracuda 3TB Storage drive. When I go into start-computer-manage-disk management, there is about 1TB of unallocated space that I can't merge with the rest of the drive for some reason. The "extend volume" option is whited out on the usable part of the drive. Is this just a fixable gimmick, or is my drive bad?
right click on on computer on the start menu
click on Manage
click disk management on the right side
you will see on the right side in grey disk 1, disk 2, disk 3 etc
right click on whatever disk # it is
Click Conver to GPT Disk