New Partitions Appearing on Disk 0 after Windows 10 Update

I recently upgraded Windows 10 to the spring update. Since that time there are two new partitions on Disk 0 (which is an SSD), one very small and active (labelled N), and one even smaller which is empty and unlabelled.  Disk 0 also contains my boot drive (C) which has lots of open space.

I am getting new messages that the N drive on my desktop machine is almost full.  But I don't use it and it appears to contains only three folders: Recycle.BIN, Recovery and System Volume Information.

If I look at Disk 0 through the Windows 10 Disk Management utility the small N drive is referred to as an OEM Partition, the unlabelled area is called an EFI System Partition, and the C drive is referenced as "Boot. Page File, Crash Dump, Primary Partition".  All three drives are said to be "Healthy" and both the N and C drive are NTFS.

I would like to go back to a single partition on Disk D, or at a minimum, eliminate the "almost full" messages for the N drive.  My inclination is to buy a partition management utility such as EaseUS to do that but I am being cautious given the nature of the problem and the consequences of screwing it up.

I would appreciate any suggestions on what is happening here and what I should do.  Thank you.
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jscarpenterAuthor Commented:
One more thing:  I just loaded EaseUS but did not make any changes.  The partition I am referring to as N above is labelled as "Unused Partition"  and other smaller partition which I mention above is called "EFI System Partition"
Removing drive letters does not hurt. Anything else can gi bad, so don't delete partitions.
you can show better your problem by possting a screenshot of disk manager, showing all partitions
any errors in device manager?
noxchoGlobal Support CoordinatorCommented:
Usually these OEM drives contain some hidden boot data for data recovery tool set by PC vendor. Just remove the N drive letter from it and the messages will not appear again.

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jscarpenterAuthor Commented:

Thanks.  Your comments lead me to more focused searches (such as the one above) and the solution.  I will delete only the drive letter and leave both of the partitions in question alone.
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Windows 10

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