I recently installed a 525 GB SSD and cloned my 320 GB HDD to it. The hard drive has my OS installed on it. Everything booted up fine after several checks, so I wiped the HDD and am now using it as simply storage. However, I noticed that it showed the capacity of the SSD as only 297.96 GB. I checked Disk Management and there's 190 GB of it unallocated. How would I go about making this space usable?