硬盘驱动的例子，系统最基本的驱动，一样要DDK才可以编译，著名的还原软件deepfreeze就是通过替换系统文件系统驱动来实现的。-hard drives example, the basic system-driven, the same can be DDK compiler. Reduction of the famous deepfreeze software system is replaced by paper-driven system to achieve.