How to get back memory after deleting Objects

Hi Gurus,

I work on SAP BI. In BI, we install Business Content inorder to extract data from different Datasources. Once we install that, there's a good amount of memory getting consumed on U'r hard drive. Since, I was running short of memory, I wanted to get back the memory which I lost after business content installation. So, I tried deleting all the Objects which were installed during Business Content Installation, but for my surprise, I was losing some more memory, instead of getting the one I lost.

Can anyone help me out to get my memory back. Can U guide me where in the Hard Drive (exact location) do this memory gets consumed & how to free it.

Thanks & Regards,

Syed Ali