Is There Some Easy Method For Swapping Drive Designations?

You should be able to extend with Windows Disk Management IF AND ONLY IF you have some free space immediately adjacent (to the right) of the partition to be extended, as viewed in Windows Disk Management.

Without seeing screen shots, I'd assume that was NOT the case in your situation.

In which case, you can use Partition Wizard, which does not have that "immediately adjacent to the right" limitation.
The Disk Management layout was (from left to right)
  • unpartitioned space
  • the C: partition
  • the D: partition
As I said, I first shrunk the D: drive, which was the furthest to the right in DM. After the shrinking was complete I right clicked on the partition immediately to the left of D:, which was labeled C:. Right-clicking showed the Extend option to be greyed out. It would certainly seem that the proper protocols were followed.

Given that, I suppose I have to see if I can find that old PW CD.

You could not extend C in DM because of the reason I gave: no space immediately adjacent to the right.

From left to right, you had unpartitioned space, C, D, unpartitioned space. In such as case, you could extend D, but not C.

If you had unpartitioned space, C, unpartitioned space, D, you could have extended C.

So, use Partition Wizard.
 

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Now I get it.... You see, I rather assumed that since partition D consisted of mostly empty space, I wasn't violating any MS commandant. So it's unpartitioned space that's needed to the right, not just any old empty space.

Thanks
 

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