I'm trying to extend my C: partition (I have 10 GB Unallocated), but the extend option is grayed out :
Same results with diskpart command : There is not enough usable free space on specified disk(s) to extend the volume.
And the extend failed with the File and Storage Services (Server Manager\File and Storage Services\Volumes\Disks) :
File and Storage Services Image
Any idea about this issue ?
Many thanks !