XPS 8950, removing or deleting a small volume on C: drive

Can you double-click D: in File Explorer to open it and see what/any files may be on it? 

It's probably a very small % of total space on the physical drive, so is it worth worrying about, as long as PC is working OK?

@RoHe​ It isn't worth fooling with except for the fact that I have things that refer to the D: drive. I am just going to go through those items and change the drive letter to something else. And No , double clicking does not work and I can't even gain permission to open it.

If you run a disk imaging program like Macrium (free for 30 days), does it see that strange D: partition on the boot drive?  If it does, you could image the entire boot drive (all partitions) and save the image on an external USB drive. If it doesn't see that partition, even better.  Then use Macrium to create the bootable USB you'll need in next step.

When that's done, boot PC from the Macrium USB.  Use Macrium to restore all partitions onto the boot drive, except C: and that spurious D: partition, if seen.  Have Macrium copy the OS C: partition onto the boot drive last and tell Macrium to expand this partition to use all available free space.  Hopefully that will remove that strange partition and use all free space for C:.

Otherwise, you may have to boot from a bootable USB with something like the Windows OS installer to wipe the boot drive from a command prompt.  Then boot from the Macrium USB to restore all partitions, as above, except that D: partition, if Macrium imaged it...

@RoHe​ Certainly worth a try. I will see what I do with it. Not the best time for year right now. I will advise.

Thank you