使用VBoxManage命令行,后面跟已知镜像的UUID
D:\MyVMs\winxp>"c:\Program Files\Sun\VirtualBox\VBoxManage.exe" clonehd c1f238f1 -7acb-4bce-a788-34f9e7789c6a winxp_develop.vdi
默认生成在C:\Users\xxx\.VirtualBox\HardDisks\下(Windows 7)