Apple: “The logs are typically very overwhelming.” So what can the user do to get information about iCloud Drive problems?
sysdiagnose
Safeguard your Mac, take screenshots, capture the logs in a logarchive or with sysdiagnose, make a written record, then repair and recovery.
Many Mac users now have a better idea as to whether anything’s amiss at home than in their Mac. Why we need a way to check a Mac’s status.
If your Mac slows to a crawl, don’t just reboot it. Here’s how to discover what the likely cause is, and a structured approach to recovery.
What’s the difference between a crash and a panic? How can you tell what’s likely to have caused a panic?
They’re hidden away and never promoted at WWDC, but vitally important to every Mac user. Could you imagine not having Disk Utility, for example?
If you’re familiar with the macOS log and have problems with an iOS device, you can easily access its log to help in diagnosis.
As macOS gets more complex, diagnostic and control tools provided by Apple have become less accessible. This makes macOS harder to diagnose and support.
Enjoy being a computer owner-user-maintainer while you can: those days are NUMbered.
How to run individual components from sysdiagnose.
The Eclectic Light Company 