Hi, Having just setup my new HDD, i noticed in the disk management, that there was 20GB on my C: drive missing. It has been sat 'unallocated' since i re-installed Windows a month ago. I'm not sure how i missed that, but its a mystery to me how it happened. I did not setup Windows to have a 140GB C: drive (the drive is 160GB) but yet, there it is, 21GB of my physical C: drive not doing anything ('unallocated' as mentioned). For the time being, i have set it as I:, as a separate drive, but this is not how i want it to stay. Is there any way of joining the drive back together, to form a complete 160GB C: drive, and as it is a boot drive, will this cause a problem?