Hmm, you usually have a factory disk that goes with your facotry installation. So losing your OS isn't much of a concern, just all the other information.You heard correctly about partitioning. Windows dispises other OS's and will not allow them to run on the same drive as it. Anyway, you can partition your drive more than twice, depeding on the drive, but i don't think fdisk will be able to accomplish the task. You will need a program to do such a thing. Or just get another hard drive and load Linux on there, and swith the primary and slave drives when you wish to use the OS.
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