If you have noticed in Disk Management, a part of your hard drive says Healthy (OEM partition), and occupies space in GBs, then it is normal. There is nothing to worry about except that part of the ...
Managing partitions is something you may not need to do frequently, but when you do, Windows' partition manager is not up to snuff.
I currently have a 40 gig drive with about 20 gigs free, and I wanted to create a new partition on the drive. It is drive C, and the OS and all apps are installed on it. I know Disk Management in ...