>>If you check Properties for OneDrive, you will see that it's mapped already as a folder under c:\users\, like c:\users\michel. If you want a specific drive letter, you can use
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subst x: "c:\users\Michel"

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>Then, of course, why didn't I see it. I remember I have seen it yesterday in there. This shortcut seems like a good solution. I will map it.

Dunno if applicable or even more than coincidence:
I agree under windows mapping drive letters often is easier to handle - but last year my laptop system (often connected to 2-6 USB3 large discs) became unstable. Removing nearly all shares and drive letter substs seems to have helped a lot.