Disable SIP on Mac OS X

In Mac OS X El Capitan, Apple added SIP (System Integrity Protection), previously referred to as rootless mode in the beta releases. SIP is essentially just a block on editing the /System, /sbin, and /usr directories (with the exception of the /usr/local subdirectory).

I recommend keeping SIP enabled whenever possible, so enable it again after you have finished making changes, unless an application you’re trying to run requires it permanently disabled.

Disabling SIP

1. Reboot your computer into Recovery Mode by holding down Command + R on startup
2. Open Terminal from the Utilities menu
3. Enter the following command:

   csrutil disable
   

4. Reboot your computer

Enabling SIP

1. Reboot your computer into Recovery Mode by holding down Command + R on startup
2. Open Terminal from the Utilities menu
3. Enter the following command:

   csrutil enable
   

4. Reboot your computer