I have got a desktop system , I do not know anything about the computer except to play games and access internet. when I click on my computer I see 2 local drives in it which specifies 160GB of space in each. One day I went to my friends house, I saw that there were 9 volumes of hard drives visible to me. When I asked about it he could not give any explanation to me as he was too poor as far as these machinery knowledge were concerned. I checked the capacity it showed something else for six and very less for the rest. I think he has installed more than one hard drive in his system . Can I do that too. Please help me I too want to increase the capacity.