Q: How do I turn off iCloud Drive, as it cannot ever get set up in Preferences?

After I upgrade to iCloud Drive, can I downgrade and go back to using Documents in the Cloud?

No, after you upgrade to iCloud Drive, you can't go back to using Documents in the Cloud. You can turn off iCloud Drive in iOS 8 by going to Settings > iCloud > iCloud Drive. You can turn off iCloud Drive on your Mac by going to Apple menu > System Preferences > iCloud and deselecting iCloud Drive. If you turn off iCloud Drive, your documents and data will no longer be kept up to date across all of your devices.

http://support.apple.com/en-us/HT201104

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

The title of the Console window should be All Messages. If it isn't, select

          SYSTEM LOG QUERIES ▹ All Messages

from the log list on the left. If you don't see that list, select

          View ▹ Show Log List

from the menu bar at the top of the screen.

Click the Clear Display icon in the toolbar. Then take an action that isn't working the way you expect. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.

The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.

Please don't indiscriminately dump thousands of lines from the log into this discussion.

Please don't post screenshots of log messages—post the text.

Some private information, such as your name or email address, may appear in the log. Anonymize before posting.