A practical guide on how to extend a Windows C: drive when a stubborn Recovery Partition is blocking the adjacent unallocated space. The post walks you through safely using the diskpart command-line utility to delete the obstructing partition, extending the C: drive using Windows Disk Management, and optionally (but highly recommended) shrinking a small portion of the C: drive again to create and properly configure a brand-new Windows Recovery Environment (WinRE) partition.
