Repair-vhd [patched] Now

Repair-VHD -Path "C:\Path\To\CorruptedVHD.vhd" -Full -Verbose

For footer corruption (e.g., a missing or overwritten VHD footer), the diskpart command SELECT VDISK FILE="C:\corrupt.vhd" followed by ATTACH VDISK READONLY can sometimes force the operating system to reconstruct a valid footer based on the file’s data. If this fails, tools like the open-source vhdxtool or Microsoft’s Hyper-V VHD Repair (part of the Hyper-V Manager’s “Edit Disk” wizard) can replace a corrupted footer with a valid, regenerated one. repair-vhd