Based on original article located here: https://technet.microsoft.com/en-us/library/cc725671(v=ws.11).aspx
Master boot record (MBR) disks use the standard BIOS partition table. GUID partition table (GPT) disks use unified extensible firmware interface (UEFI). One advantage of GPT disks is that you can have more than four partitions on each disk. GPT is also required for disks larger than 2 terabytes.