Open PowerShell as Administrator:
Repair-VHD -Path "C:\Corrupted.vhd" -Force This command fixes minor footer and header inconsistencies. It does repair logical file system damage or data block corruption. Run it on a copy first. Method 3: Manual Fix Using DiskPart For VHDs that mount but show as "Unknown" or "Not Initialized" in Disk Management: how to repair vhd file
clean convert mbr create partition primary format fs=ntfs quick assign letter=Z exit After this, the VHD is functional but empty. Use data recovery software on the original corrupted VHD before cleaning. When Microsoft tools fail, specialized software can reconstruct VHD headers, repair block maps, and extract data. Method 3: Manual Fix Using DiskPart For VHDs
PowerShell includes a dedicated cmdlet:
diskpart select vdisk file="C:\Corrupted.vhd" attach vdisk list disk If the disk appears but has no partitions, attempt to bring it online: attempt to bring it online: