You may find yourself in a situation where you need to increase the size of your disk. See below for instructions:

  
diskpart
  
Select vdisk file="E:storemynew.vhd"
  
list vdisk
  
expand vdisk maximum=50000 (in megabytes)
  
attach vdisk
  
list disk
  
list volume
  
select volume 7 (volume number from list volume command)
  
extend
  
list volume 

detach vdisk
  
exit