MBR OR GPT
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 two terabytes (TB). You can change a disk from MBR to GPT partition style as long as the disk contains no partitions or volumes L Note Before you convert a disk, backup any data on it and close any programs that are accessing the disk. Note You must be a member of the Backup Operators or Administrators group, at minimum, to complete these steps. Converting using the Windows interface Back up or move the data on the basic MBR disk you want to convert into a GPT disk. If the disk contains any partitions or volumes, right-click each and then click Delete Partition or Delete Volume . Right-click the MBR disk that you want to change into a GPT d...