"Modalità utente singolo" funziona ancora, post v10.10.x ?
Ho provato le seguenti istruzioni, senza successo:
OS X Yosemite: avvia in modalità utente singolo
To troubleshoot your computer’s startup sequence using only UNIX commands, start up in single-user mode. You should do this only if you’re comfortable with UNIX.
Choose Apple menu > Restart, or press the power button if your Mac is turned off.
Press ⌘ command+s as your Mac starts up.
The screen is black with standard white text. You can now run the UNIX commands that you want.
In single-user mode, not all OS X functions are available. To use the standard OS X interface or other high-level aspects of OS X, you need to start up in the standard mode.
To switch back to the standard OS X interface, type reboot, then press return ⏎.
Ho solo la normale schermata di accesso alla GUI.
Qualche idea su cosa sta causando questo (e / o) come correggere?