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  • macOS Finder misbehaving, unresponsive, crashing

This occasionally happens after upgrade. The behavior has been observed in macOS High Sierra and, earlier, in OS X Yosemite 10.10x series.

Solution: On Finder, press Command+Shift+G and go to ~/Library/Preferences/

Locate the file “com.apple.finder.plist” and delete it.

The alternative is to delete the file from the commandline or Terminal: ~/Library/Preferences/com.apple.finder.plist

Reboot the machine afterwards. Or from the commandline: sudo shutdown -r now “Restarting Now”


  • Display of “?” after failed upgrade



Solution: (Re)install using full macOS (macOS High Siera 10.3). Steps:

1. format medium (USB drive with at least 8GB) on MacOS Extended using Disk Utility create bootable

2. mount a full version of the new macOS version and from there, issue a command similar to this:

sudo «/Applications/Install\ »macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/UNTITLED && say Boot Installer Complete

For old machines, you may use High Sierra patcher.

3. Boot medium with Options pressed.