So which files and folders does SIP protect, and how can you work around it?
SIP
If your old Mac’s optical drive fails, Apple wants you to buy a new one – and its USB Superdrive, which won’t work with the old Mac.
Something odd has happened to your Mac. Last time you used it, it worked fine, but doesn’t any more.
I cannot remember ever wishing that I did not use Macs, but unless Apple sorts itself out, I will.
Sunday morning nightmare: how a missing component of OS X brought my iMac to its knees.
El Capitan has made the checking and repair of storage more complex. Here is a clear explanation of what to do.
El Capitan’s no-go areas make many important extensions unusable now. Apple must step in and enhance OS X to compensate.
How to inspect and change them, in the Finder and the command line.
It’s not just about pretty screen fonts: OS X 10.12 needs to re-engineer its security.
Why can’t I install a kernel extension in El Capitan?
The Eclectic Light Company 