Q: Today not open a default options
MacBook Pro with Retina display, OS X El Capitan (10.11.1)
Posted on Dec 1, 2015 1:45 AM
by Damon Abdiel,Solvedanswer
the solution is:
Basically you just
- Reboot in Recovery mode (CMD+R at the chime)
- From the recovery menu pick Terminal
- Run this command to (temporarily) disable SIP:
csrutil disable - Reboot into El Capitan
- Verify that the extensions are back in the sidebar and in system preferences
- Reboot in Recovery mode again
- At the Terminal re-enable SIP with run
csrutil enable - Reboot back into El Capitan. Everything should still be back and all is well.
Posted on Dec 1, 2015 4:19 PM

