Win8 VirtualBox path problem and VDI to VHD

Windows 8 prompts when installing VirtualBox "The system can not find the specified path". As shown below:

The prompt for this error is because the current user name is Chinese. As shown below:

Workaround:
Do not click OK after double-clicking the installer and the error in Figure 1 appears.
Then enter:
%USERPROFILE%AppDataLocalTempVirtualBox
Execute the installation program inside.
The Hyper-V feature of Windows 8 is very good and very powerful. However, the virtual file's VDI format disk file is not available.
The solution is to use VirtualBox's own "VBoxManage.exe" tool to convert the file format.
How to use (Windows environment, Linux version should also have the VBoxManager binary):
"C:Program FilesOracleVirtualBoxVBoxManage.exe" clonehd D:VMsVDIDebian6.vdi D:VMsVHDDebian6.vhd --format VHD
Vmdk converted to vdi
VBoxManage.exe clonehd source.vmdk target.vdi –format VDI
vdi converted to vmdk
VBoxManage.exe clonehd source.vdi target.vmdk –format VMDK
vdi conversion Vhd
VBoxManage.exe clonehd source.vdi target.vhd –format VHD
vmdk to vhd, vhd to vdi, vmdk, then change a little parameter on it. It should be noted that the original file will not be deleted after running the command.