I have recently bought Windows Vista Home Premium and I am having a problem. For some reason I am missing about 20 to 30 GB on my hard drive. I asked my Computer Information Technology teacher and she doesn't know what is happening. I am completly stumped. I built my computer from the ground up with Windows XP Pro SP2, and nothing was wrong with it, at least not before I installed Vista.
I have a Seagate sata 250GB HDD

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