Cloning programs will clone the whole drive partition. A partition will be what shows in 'my computer' with a drive letter. So if both your data and operating system are under the same drive letter (ie. C:) then they will be clonder together. If they are seperate (C: for OS and d: for data) then you would need to cloner both. Cloning programs would generlaly be capable of doing this.
If you have no OS CD, you will likely find another partition (recovery) which may or may nto be hidden in windows. You would need to clone this to so if your operating system ever messed up - you could restore it.
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