此篇会写可升级及不可升级的作业系统
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=f2d08680-0875-44d3-bb5f-c5b05ac7201b
此篇会写可升级及不可升级的作业系统
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=f2d08680-0875-44d3-bb5f-c5b05ac7201b