VHDX support

[Torinde]

Do you plan to add VHDX support?

Maybe also VFD, but I find VHDX more relevant.

[shermp]

Not at this stage. VHDX is a vastly more complex format. I made a start on something a while ago, but ran into a wall when I realized I HAD to implement the log feature, which I still don't understand completely how it all works.