You have virtual machine named VM1.
VM1 uses a fixed size virtual hard disk (VHD) named Disk1.vhD. Disk1.vhd is 200 GB.
You shut down VM1.
You need to reduce the size of Disk1.vhD.
Which action should you select from the Edit Virtual Hard Disk Wizard?

A.
Shrink
B.
compact
C.
Merge
D.
Convert
Explanation:
The Edit Virtual Hard Disk Wizard allows you to Compact, Convert, or Expand the VHD.
Compacting reduces the size of a dynamically expanding VHD but not a fixed-size VHD.
Converting changes the disk format to the newer VHDX. This process recreates the virtual
disk, and allows you to specify the size of the VHDX.
Ref: http://blogs.technet.com/b/yungchou/archive/2013/01/23/hyper-v-virtual-hard-disk-vhdoperations-explained.aspx
http://blogs.technet.com/b/aviraj/archive/2012/05/06/windows-server-2012-convert-vhd-tovhdx-using-hyper-v-manager.aspx
Convert the disk to a vhdx file so that you have the new Shrink option. http://www.techrepublic.com/blog/data-center/working-with-and-resizing-windows-server-2012-vhds/
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