My laptop:HP Pavilion g-series, W7, 500HDD, 4GB RAM, i5. Problem: the drives are like this>222gb, 108gb and 102gb. My os is in the 222gb drive and I'm not comfortable using the drive with the os in it.a lot of space is wasted here. I have tried to shrink it but it shows that only some 450mb can be shrinked. how do it get back this lost space?