Howdy!
I've recently faced a problem where attaching an old VHDX file with Windows 8 RTM on it WITH opening this VHDX in Explorer somehow corrupted this disk.
What I did:
1. Imported an already used virtual machine into Hyper-V Manager using the Import Virtual Machine command in Hyper-V Manager.
2. Added an old VHDX disk with a Windows 8 RTM setup on it.
3. Opened this VDHX in Windows Explorer.
4. Ejected this VHDX from Windows Explorer.
Issues:
1. When starting the imported VM with this VHDX, I get the "No boot device error".
2. When opening this VHDX in Windows Explorer, I get:
"The disk image isn’t initialized, contains partitions that aren’t recognizable, or contains volumes that haven’t been assigned drive letters. Please use the disk management snap-in to make sure that the disk, partitions, and volumes are in a usable state."
Attaching the disk using diskmgmt.msc does not allow to initialize it. All commands except for Detach VHD are grayed out.
This VHDX contains important data! Is it possible to recover it?
Well this is the world we live in And these are the hands we're given...