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I'm trying to shrink my VHD from 35G to 25G. &nbsp;I have attach the VHD from my VM host and shrink it down but now have unallocated space (10G). &nbsp;I've search and find that VHDresize will allow me to shrink it to 25G. &nbsp;but when I run VHDresizer, following the steps, the &quot;resize&quot; button is gray out. &nbsp;How can I get it to work?
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I'm trying to shrink my VHD from 35G to 25G.  I have attach the VHD from my VM host and shrink it down but now have unallocated space (10G).  I've search and find that VHDresize will allow me to shrink it to 25G.  but when I run VHDresizer, following the steps, the "resize" button is gray out.  How can I get it to work?

VHD resize not working

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.