If the VHD is removed after a Windows 11 upgrade, you can get it back or stop it from happening using the suggestions in this ...

Now your VHD will be initialized. Double-click on your file, and the .vhd/.vhdx file will now be mounted and attached as a drive. You will see it open in a separate File Explorer window.

We've used Virtual Server 2005R2 extensively in test/dev environments without any instances of .VHD file corruption. We’ve also done some production stuff… Exchange 2003 SP2 in a client’s ...

At long last, Windows 8 will allow you to mount and unmount ISO and VHD files -- if only it let you create them, too.