Combining partitions is a fantastic way to declutter your storage and optimize performance—but it’s a surgical operation. Always start with a backup, understand whether your partitions are adjacent, and never rush the process.

You installed a big game on C:, but D:\ is 90% empty. Combining them gives you one large pool of space.

Right-click the partition you want to keep (e.g., your C: drive) and select Extend Volume .