The Sysinfo VDI Repair Tool. This tool helps its users to recover damaged VDI files with 100% accuracy. The tool has a free demo version to evaluate the performance of the tool. It supports all file systems where your VDI is saved, i.e. FAT, FAT16, FAT32, FAT64, NTFS, HFS+, and EXTX. Some of its other features are: 

• The tool repairs damaged Virtual disk image files and restores them.
• VDI file repair tool is suitable with MBR and GPT partition tables.
• It is widely compatible with recovery for dual disk types i.e., Fixed and Dynamic disks.