After logging in for the first time choose option 13 in HVConfig.cmd. This will open the command prompt if one isn’t already opened in the background already. Type the following command to list the disks in your system:
diskpart.exe
DISKPART> list disk
When you only have one disk in your system you would choose to convert disk 0 to a dynamic disk:
DISKPART> select disk 0
DISKPART> convert dynamic
Reboot your server to convert the disk.
You can now create the volume that spans the unused space on your disk. Use the following commands:
diskpart.exe
DISKPART> select disk 0
DISKPART> create volume simple
After you created the volume you need to format it. Find the right volume by typing
DISKPART> list volume
The last step is to format the volume with NTFS and assign a drive letter. Use the folloing commands:
DISKPART> select volume 2
DISKPART> format fs=ntfs label="Hyper-V Guests" quick
DSKPART> assign letter=h
DISKPART> exit
Marc Kean 