Vhd [new] | Repair Corrupt

He downloaded VHDTool (a small open-source CLI utility). Its job: analyze and fix the VHD footer/header alignment.

He ran:

vhdtool.exe /repair "E:\VHDs\prod_db_backup_2024.vhd" The output was promising: [INFO] Footer found at offset 4294967296. [INFO] Header checksum invalid. Recalculating... [INFO] Rebuilding BAT. 1 invalid block entry removed. [SUCCESS] VHD repaired. repair corrupt vhd