If you have been using Windows operating system for a while, then you might know that the OS lets users partition existing drives. Every disk partition related things can be handled through the Disk Management utility of Windows 10. Generally, it was the C drive where we store our most important system and program installation files. As apps continue to be installed into the C drive, one day, you might find that the system partition (C: drive) is running out of storage space. It's recommended to keep at least 20-40 GB of free space on system partition for better performance. So, if you recently found that the System Partition or C: Drive is running sort of storage space, then you can choose to increase the C drive space. So, in this article, we have decided to share a working method to increase the C drive space in Windows 10 computers. How To Extend C Drive Space (System Partition) in Windows 10 In this method, we are going to use the Disk Management Utility to extend the C