I have an XPS 13 that came with Windows 10, and various Dell recovery partitions. I deleted those partitions and split the drive in two for Windows 10 and Ubuntu 16.04.
My issue is that the ~12 gigabytes that were being used for the recovery images and OS can't be used. I want to expand each of Windows and Ubuntu's Filesystem partition by 6gb each. However, no matter what utility I use (Windows disk management, GParted), I can't expand any partitions, despite having 12 GB of unallocated space.
I've tried formatting it, deleting again, and nothing changes it. It shows as being on the same drive - I thought maybe it was some kind of extra internal storage - but when adding all the partitions together, including those I get approximately the 256gb I should have. However, When deleting the original partitions, I had two set of "unallocated space". Deleting the original windows partition created the 116gb unallocated space I expected (which happened to be to the left of the Linux Filesystem, and the Swap partition), and to the right of the Linux partitions were the recovery ones. When I deleted those, they didn't merge into the unallocated space to the right.
I'm at a loss as to how I should proceed.