How to add unused space to c drive without formatting for Windows 11?

To add add unused space to C drive: drive on a Windows computer, you can use the Disk Management tool. Here's a step-by-step guide:

1. Steps to Extend C: Drive Using Disk Management:
2. Open Disk Management: Press Windows + R, type diskmgmt.msc, and press Enter.
3. Locate the Unallocated Space: Find the unallocated space on the disk (it will be labeled as "Unallocated").
4. Check the Partition Order: The unallocated space must be directly next to the C: drive (to the right of it in Disk Management).
5. Extend C: Drive: Right-click on the C: drive > Select "Extend Volume...".
6. Follow the Extend Volume Wizard: Click Next>Specify the amount of space to add (by default, it will use all unallocated space)>Click Next, then Finish.

Using Third-Party Tools to add unused space to C drive:

1. Download and install a reliable partition manager.
2. Launch the tool and locate your C: drive and unallocated space.
3. Move or resize partitions as needed to make the unallocated space adjacent.
4. Extend the C: drive into the unallocated space.

Note: About how to add unused space to C drive. These tools often have user-friendly interfaces and can perform operations that Disk Management cannot, but always ensure you have backups before proceeding.