Step 8) Install Microsoft’s VM Converter 3.0 (or newer) which you downloaded in step 1. Step 10) In Microsoft’s Hyper-V Manager, create a Generation 1 (Not a GEN 2 EFI) Hyper-V virtual machine to use as the Whonix Gateway and use the option for selecting an existing hard drive. Then select the newly created VHDX file. More @Wikipedia
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