Pick your device to see every fix in one place.
Reinstalling macOS from Recovery and the disk is refused with com.apple.BuildInfo.preflight.error error 10? The disk was Mac OS Extended. Erase it as APFS with GUID Partition Map.
The Desktop and Documents Folders switch in iCloud slides back off? Turn off OneDrive’s folder backup, remove aliases, rename old folders in iCloud Drive, or rename your Mac.
Your Mac’s screen flashes white even with Flash the screen off? Owners traced it to an alert sound macOS could not play. Fix the alert output or restart coreaudiod.
Internet Sharing or its options grayed out on your Mac? On Ventura, set the ports with sharing off; from Sonoma on, turn it on, then Configure. 802.1X and work profiles block it.
Videos on your Mac racing in fast-forward with an external monitor plugged in? Switch Sound output to the Mac’s own speakers, or force quit coreaudiod. A restart clears it too.
Terminal on your Mac says Operation not permitted, even with sudo? Turn the folder on under Files and Folders, or give Terminal Full Disk Access, and leave SIP on.
idleassetsd eating your bandwidth or disk on a Mac? It downloads Apple’s aerial wallpapers. Pick a still wallpaper, turn on Low Data Mode, and clear its folder if it keeps writing.
The Rotation menu is gone from Displays on your Mac? A DisplayLink hub moves it into DisplayLink Manager, the built-in screen hides it behind Option, and mirroring removes it.
Your Mac keeps showing Background Items Added for Google Updater or an app you deleted? Find the helper with the info button or sfltool dumpbtm, clear leftovers, then reset.
Pasting into Terminal on your Mac adds 00~ and 01~ around the text? A program left bracketed paste on. Press Option-Command-R, then find the dropped ssh session behind it.
