Step 1. Right-click "My computer"→"Management"→"Disk Management". Step 2. Right-click the unallocated space, choose "New Simple Volume" from the shortcut menu. Follow the wizard, and click "Next". Step 3. Set the size of the new volume by using the Simple Volume Size. Click "Next". Step 1: Press "Win + R" on your keyboard to access the Run dialogue box, type in cmd, and press Enter. Step 2: Type diskpart in Command Prompt display and press Enter to launch the Diskpart Windows. Step 3: Type in the below commands in sequence and press enter after each command.

Step 1. Launch EaseUS Partition Master and go to Partition Manager. Right-click the system C drive, select " Advanced ", and click " Extend with 2nd Disk ". Step 2. After the software analyzes the status of the disk and lists the extended results, click " Customize Plan " to continue. Step 3.

3. Right-click on the C: system drive and select "Resize/Move"; 4. To add space to the C: drive, drag the edge of the system partition into the unallocated space; 5. Click the "Perform operation" button, it will list the pending operations and click "Apply" to execute the changes and extend the C drive. I await news.
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unallocated space windows 10 cannot use