I was running a dual boot of Windows 10 and Ubuntu on my machine and after several weeks, I decided to keep Linux on another machine as dual booting was a bit inconvenient for me. I've since deleted the Unix OS from my machine and have a 500GB partition that is unallocated and wasted memory. Here's what my partitions look like. If the image fails to load for you (not high enough rep to embed images), the important partitions are laid out like this:
[C: (514GB)] - [Healthy Partition (7.5GB)] - [Unallocated (412GB)]
Every solution so far says to move the unallocated partition next to C: and merge the two; however, Windows' disk management app refuses to give me this option, and I'm nervous about deleting the healthy partition since I don't know what it does. I've tried everything else except 3rd party software to move the unallocated partition over next to C: and merge them together, but I've been unsuccessful so far. Do any more Windows-savvy people have suggestions on how I can reclaim this half-terabyte space without a clean re-install?