I have recently reinstalled Windows Vista on my computer and have 2 hard drive as well and Vista is installed on the C: drive. I want to format the D:drive but am getting an error message saying that "Windows cannot format the system partition on this drive". I dont understand why is this System partition installed on D: drive? Is there anyone who can tell me how can I move it to C: drive so that I can format D: drive? Thanks for any suggestions.