Adding Removable Drive to Library

I have several cloud drives with drive letters.

When I attempt to add these to a library I receive the error:

Cant add folder as its a removable drive.

I do not see these drives in Disk Management - that workaround seems not to be an option.

Windows 8 Dopus 11

Thaks in advance

A button which runs Copy INCLUDEINLIBRARY="My Library" (with the name of your library) might work, if you select what you want to add and click the button. (For most folders, if you right-click or shift-right-click them, there may already be a menu for adding them to a library. That won't be the case for drive letters, where you'll need to make a button specially.)

That will sometimes let you bypass Windows restrictions on what it lets you add to libraries using the normal UI. It's possible it will still detect it's a removable drive and block it from being added, and it's also possible it will add the folder to the library but with unexpected results or unwanted behavior later on. (But I have forced network shares into libraries using this method, and everything I used seemed to work OK.)