My iCloud Photos library is corrupt. Photos are missing, the structure is broken. I have a backup of the local photos library with all full res images. I'd like to replace the entire content on iCloud with my local data but am unable to.
My library has more than 40,000 photos and is 200GB large.
All I'd really like to have is a fresh start...possible? If yes, how?
Since deleting directly in the browser did not work (I guess Apple never tested it with a library that large...), I ended up using this workaround: create a new Photos library (start Photos app with option key pressed). Make it the system library and sync with iCloud (only download previews). Then delete all photos and albums once the download has been completed. The changes will take about 15 minutes to be reflected in the browser. Then I switched back to my original library and enabled iCloud sync. Now it's uploading all of the >40,000 images back to iCloud.
You are a %$#@*&% Genius. That worked Perfectly. I find it SAD that I can comb the apple Knowledge base and find Squat, then I come across some vague site that has the exact answer I needed. Kudos to you and thank you for this post.