Right-click the (e.g., "Disk 1") on the left side and select Convert to GPT Disk .
If you install a 3TB (or larger) hard drive in a Windows 7 system, you may find the operating system only sees or ~2TB , not the full capacity. 3tb unlock windows 7
After creating the new partition, verify that it's using the full 3TB capacity: Right-click the (e
They use a special driver + virtual RAID to split the 3TB into smaller 2TB+1TB virtual disks, then combine them. The drive appears as one volume. Right-click the (e.g.