We have an SBS 2008 running as VM inside Hyper V. The Hyper V is run by a physical Win 2008 Stnd editihe SBS 2008 has 2 vhd drives, 1 being the OS and the second being the data disk. All of a sudden the data vhd is saying that it's a new drive with unallocated space inside the SBS 2008 machine. When you go back into Hyper V management console and inspect the vhd it says it's only 11 Meg in size yet it was 160 GIG in size!! All our data was on that vhd. Any ideas what we can do????