Windows 10: How do I delete a volume between an extended volume and an unallocated disk

CC There is a thing between unallocated and C drive, is there a master know how to delete it, I want to expand C drive

:)

 

Extending volume problems

Looks like you'll need to go dynamic.

 

Extending volume problems

I cannot extend my volumes in Disk Management or diskpart.exe, the option is greyed out. Is it because the partition is at the end of the disk? If so how to fix?
The attachment has a screeny.

 

How can I extend the main volume of my disk?

I was dual-booting Ubuntu with Windows 10, but decided I no longer want Ubuntu on my SSD. I've deleted the contents of the partition, but I can't figure out how to extend the main partition to consume the extra unallocated space that was left behind after deleting the contents of the Ubuntu partition. Here are the steps I've taken:

1. Open Disk management




2. Right-click the volume I wish to extend



As you can see, the extend option is unavailable. I thought maybe I just need to delete the 77gb partition to restore the space to the main partition, but it gives me what seems like a pretty serious alert when I try to delete the 77gb partition:

3. Attempting to delete the 77gb partition to restore the 77gb to the main partition




Does this mean that I will no longer have access to the 77gb if I delete the partition? Is this some irreversible change, or am I misunderstanding the warning?