Andy's VMware vSphere tip#4: Partitions :- OS Partitions have no place in VMware vSphere or Hyper-V. So do not create a C: Partition or volume, and D: Partition or volume on the same virtual disk. We used partitions in the dark old ages of DOS, when the limits of a partition were 32MB, so we had to create multiple partitions on our disks, to use all the disk space.
Keep a single partition per virtual disk. e.g. create a single virtual disk for C:, if you need a D; create another virtual disk.
You will thank me in the future, because it becomes much easier to expand C: and D:, if they are on separate virtual disks. You've also got the benefit of being able to specify which datastore, these will be hosted on which is important if you have tiered storage for performance.
So in Summary do not create partitions, C: D: E: F: on the same virtual disk, you will regret it, later and then you will have to use VMware Converter, to convert your machine and remedy the situation.