Win10 C drive extended volume cannot be used with unallocated space solution

php editor Yuzai brings you a solution to the problem that Win10 C drive extended volume cannot be used and has unallocated space. When using the Windows 10 operating system, you sometimes encounter a situation where the C drive is out of space, while other partitions have a large amount of unallocated space. At this time, we hope to merge the unallocated space into the C drive extended volume to meet daily use needs. However, sometimes we will find that the option to extend the C drive volume is grayed out and cannot be used. Don’t worry, next, we will introduce some solutions to help you solve this problem.

Win10 C drive extended volume cannot be used with unallocated space solution

1. We can right-click the win icon at the bottom left of the computer and select Disk Management to open, right-click the C drive, and select the pop-up menu The extended volume is found to be gray and cannot be used.

2. At this time, we can first back up the important data in the D drive to other partitions, then right-click the D drive and select the "Delete Volume" menu item in the pop-up menu.

3. At this time, a prompt window for deleting a simple volume will pop up. Just click the "Yes" button.

#4. Next, the D drive becomes unallocated space.

#5. At this time, we right-clicked the C drive again and found that the "Extend Volume" in the pop-up menu can now be used normally.

#6. After clicking the expand volume menu, follow the wizard prompts to expand the volume.

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