How to safely undue "Optimize Storage" in iCloud or iDrive on MacBook running OS Catalina
Hello:
I am very very sorry that rather when my MacBook HD started getting full, I set up iCloud and Optimize Storage with "Desktop and Documents" and Photos, rather than going through my HD and deleting unneeded large files to free up space.
Now I am stuck with not being able to quickly open most files on my computer, or send attachments without long waits, or see many of my photos and albums in Photos, etc., and am totally dependent on having a super good internet connection for my MacBook to work well.
I also don't know if Time Machine and Backblaze are able to make complete backups with Optimize Storage turned on.
I have now cleaned up my HD and freed up more than 80 GB of space, and want to undo all of that.
But I am afraid to do it, because I no longer know what is on my HD, what is in only iCloud or iDrive (nor do I know what the difference is between them), or only on my HD, or what is on both or on all three. When I try to start undoing this by, for example, going into iCloud Drive preferences and unclicking "Desktop & Documents Folders," I get this VERY FRIGHTENING warning:
"If you continue, items will be removed from the Desktop and the Documents
folder on this Mac and will remain available in iCloud Drive."
That is the opposite of what I want, which to get everything back on the Desktop and Documents Folder on my own HD!
Can someone please guide me to a protocol for undoing storage optimization and safely getting all of my file back onto my HD?
This is all very frustrating. And scary in terms of the risk of losing unbacked up documents, photos, etc.
Thank you,
Peter
MacBook, macOS 10.15