Effectively this means that any retail upgrade DVD can be used as a fully functioning full retail copy of Vista.��Ч����ζ���κ�������DVD�ܹ���������Ϊһ������������������۸���Vista�ġ� You can pay the price of an upgrade DVD version to get a clean Vista installation!����Ը���������DVD�汾�������һ���ɾ���Vista��װ�� The steps have been confirmed.�ò����ѱ�ȷ�ϡ�

  1. Boot from the Windows Vista Upgrade DVD and start the setup program.�����Windows Vista��DVD��������װ����
  2. When prompted to enter your product key, DO NOT enter it.����ʾ�������Ʒ��Կ����Ҫ���롣 Click "Next" and proceed with setup.������ Next �� �������а�װ�� This will install Windows Vista as a 30-day trial.�⽫��װWindows Vista��Ϊһ��30��������ڡ�
  3. When prompted, select the edition of Vista which you have purchased and continue with setup.������ʾʱ��ѡ��İ汾��Vista �����ѹ��򣬲�����װ��
  4. Once setup has been completed and you have been brought to the desktop for the first time, run the install program from within Windows Vista.һ����װ�Ѿ���ɣ����Ѵ�����������Ϊ��һ�Σ����а�װ�����Windows Vista�С�
  5. This time, type in your product key when prompted.���ʱ��������IJ�Ʒ��Կ����ϵͳ��ʾ��
  6. When asked whether to perform an Upgrade or Custom (advanced) install, choose Custom (advanced) to perform a clean install of Vista.�����ʵ��Ƿ�ִ������Զ��壨�߼�����װ��ѡ���Զ��壨�߼���ִ�иɾ���װ��Vista �� Yes, this means that you will have to install Vista for a second time.�ǵģ�����ζ���㽫Ҫ��װVista�ĵڶ���ʱ�䡣
  7. Once setup has completed for the second time, you should be able to activate Windows Vista normally.һ����װ��ɣ�Ϊ�ڶ��ε�ʱ�䣬��Ӧ�ÿ��Լ���Windows Vista�� You can also delete the Windows.old directory which contains information from the first Vista install.��Ҳ����ɾ��[ Windows.OLDĿ¼�����а����Ϣ�ӵ�һVista�İ�װ��

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Why Microsoft left this loophole?Ϊʲô΢���뿪�����©���� I am as much in the dark as you are.�Ҷ��ںڰ������㡣