Windows 10: Can't merge unallocated sections on ssd

I installed a second ssd on my laptop, then partitioned it into 2 parts, a 420gb one and a 50gb one, meaning to install another OS on the 50gb one (ubuntu 18.04). Ubuntu instead ended up creating another 100gb partition off of the 350gb one and successfully installed there. But now I'm left with a 320gb partition and a 50gb one. So I tried deleting the 50gb partition then extending the 350gb one, but got an error message. I then deleted the 350gb one as well hoping the unallocated spaces would be combined into one, but they weren't.
My current situation:



So I've got 2 unallocated spaces with a partition between them. I then tried creating a new partition in the 320 gb section. In the New Simple Volume Wizard it gives me the option to create a partition with 380gb of space:



But when I go through the menus and click finish it creates a new volume with 320gb of space, and doesn't use the other 50gb.



So then when I try to extend the volume, (by any amount, even 1mb) I get this error message:




Is there some way to fix this and combine the 2 sections into 1 partition, or am I doomed to forever have an extraneous 50gb partition?

:)

 

Not Getting Able to Merge Drive with Unallocated Space!

i tried to Delete Part K which is now Unallocated Drive, i right clicked on Part I, selected option "Merge" now Drive is not being shown on list, not able to merge.

 

Not Getting Able to Merge Drive with Unallocated Space!

You should be able to right click on partition I:, in Disk Management, and select Extend volume... to add the unallocated space to partition I:. It should be as simple as that. You can't "merge" unallocated space with a partition, because unallocated space is not a partition. To "merge" 2 things those things need to be the same type of thing.

And no, it's not illegal to copy files to another drive.

 

Not Getting Able to Merge Drive with Unallocated Space!

Exit the merge window. In the main window you should be able to see the unallocated space. Right click it, and choose move/resize, and then move/drag it to the end of the drive. Then try the merge.