after that, you need mount DVD install to you computer or if you have ISO file, you can double click to mount to virtual
device.
note: you must use same version of DVD or ISO with your OS version, example, if you install 64bit version of Windows, you need 64bit version of installer, not modify ISO all in one version(include both x86 and x64 version of windows in 1 ISO file).
if you use x64 (64 bit) version of windows and mount x86 (32bit) installer, you will get error during run following command.
in my case, I'm using DVD.