I understand how to upload a single file/folder to onedrive.
However, I have a bunch of files that I want to upload, and I want to preserve the structure between them. All of the files/folders are organized in a VERY precise hierarchy on an external SSD, and I want to upload them all at once.
I tried highlighting the top level of the hierarchy and clicking and dragging that to onedrive - no luck.
How do I do this, and have OneDrive copy every subfolder and every file of what I select it to upload?
In CS terms, how do I upload recursively?