I am attempting to do some quick cleanup on a Hyper-V host used for testing.

To do this I compacted the Hyper-V Virtual Disks.

  1. Open the Hyper-V Management console
  2. Right click on VM Guest
  3. Select Settings
  4. Select the Hard Drive for the VM Guest
  5. Click the Edit button
  6. Select Compact
  7. Click Finish

*note* you want to do this on dynamically expanding disk types