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I'm trying to find the window of system preferences that helps me optimize my storage. I can open system preferences, but whenever I try to click on a section, like startup disk, it says "Preferences Error", and I don't know how to get around it.
MacBook Air 13", OS X 10.11
Try starting up in Safe Mode and see if it works as expected there:
Use safe mode to isolate issues with your Mac - Apple Support
Try starting up in Safe Mode and see if it works as expected there:
Use safe mode to isolate issues with your Mac - Apple Support
My startup disk preferences won't open.
