I have got a low disk space problem. There is only 2% of free space left on my C partition. Now, the computer also acts really slowly. So, I just wonder to expand it. I had deleted an empty partition last weekend and created about 25GB of unallocated space. So, I want to know whether the unallocated space can be added to this partition. If it is, how can I do that? Please, give me some suggestions! Thanks!