[NAME]  Your first screenshot shows the problem. You have two partitions between the C partition you’re trying to extend and the unallocated space you want to use. You need to move those two partitions to the end of the disk.
Hello to everyone. I have two SSDs (both 512gb) on my DELL laptop. I tried to set RAID 0 between them, using Intel optane memory and storage management. Before this operation, I set the "raid on" option for the SSDs in the BIOS. The result is that I have a new partition on Disk 0, but this is an unallocated partition (with 512gb storage capacity) and the OS partition (C), always with 512gb capacity. The problem is that I can't merge them, neither using "Computer manager" (Windows 10), nor using external softwares, such as AOMEI partition assistant (as recommended by DELL). Infact, if I try to right-click on the OS partition, I can't select the "expand volume" voice. What can I do, to merge these partitions? Thanks in advance, Giovanni
Unallocated partition after RAID 0