Why can't I create a new partition as per below? This is the disk of a physical server running Hyper-V 2012.
Any help appreciated!
2 Terabyte limit on MBR disks. Convert the disk to GPT for > 2TB.
Edit: For completeness - Back up all your data first. Wipe out all the partitions and volumes on the disk. Then right-click on the disk itself on the left hand side and choose "Convert to GPT."