Like others in this thread, I thought that the iCloud Drive functioned as a simple backup system, like backing up files to DropBox or any other cloud service, that in turn synced to other devices. That turns out not to be right, as many of us have found to our chagrin. I want my Documents and Desktop files to be visible through the Finder, not hidden from me and accessible only through iCloud Drive, thereby holding me hostage to Apple storage fees, among other issues.
But how to undo the error of having turned on Desktop and Documents inside iCloud Drive in the first place? I tried unchecking the box, but as others point out that does exactly the opposite of what one wants -- it deletes all the relevant files from one's hard drive, when what one wants is for the syncing to be broken but all the files restored to their ordinary place inside the Home folder, accessible via the Finder.
I tried signing out of my iCloud account, because that promised to create an archive file containing my D&D folders in my Home folder. But 24 hours later, the process had not completed.
Here's what I did that works, following the hints from Luis and Michael above.
- Create new folders inside the Home folder labeled New Documents and New Desktop.
- Create a second Finder View and go to ~/Library/Mobile Documents/. This opens a view into iCloud Drive. You will see your D&D folders sitting there. As has been pointed out, the D&D files are still physically on your Hard Drive, but Apple has made it impossible to access them via the Finder -- instead one must reach them via the iCloud Drive. And Apple further prohibits one from copying the Desktop or Documents folders in iCloud Drive back to your Home folder. BUT, Apple does permit one to move files from iCloud Drive back to Finder-accessible folders.
- So just select all files inside the iCloud Drive Documents folder, and move them to Home => New Documents folder. Because the files are all on the hard drive already, the process takes seconds. Then move the files inside the iCloud Drive Desktop folder to Home => New Desktop.
- Now go to iCloud preferences => iCloud Drive and unselect the Desktop and Documents option. Read the message that these folders will be removed from your computer, hold your breath, and proceed -- the files have been moved out of iCloud Drive already.
- The Mac OS automatically creates new Desktop and Documents folders inside your Home folder. Select and copy all the files inside Home => New Desktop to Desktop, and the files inside Home => New Documents to Documents.
- Praying to whichever deity suits your fancy, restart.
- All should be returned to normal.
This worked for me, but I make no guarantees, express or implied.
Edward