VhdTool.exe /create <FileName> <Size> [/quiet]VhdTool.exe /convert <FileName> [/quiet]VhdTool.exe /extend <FileName> <NewSize> [/quiet] Create: Creates a new fixed format VHD of size <Size>. WARNING - this function is admin only and bypasses file system security. The resulting VHD file will contain data which currently exists on the physical disk. Convert: Converts an existing file to a fixed-format VHD. The existing file length, rounded up, will contain block data A VHD footer is appended to the current end of file. Extend: Extends an existing fixed format VHD to a larger size <Size>. WARNING - this function is admin only and bypasses file system security. The resulting VHD file will contain data which currently exists on the physical disk.