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I think you misunderstand how "rootless" works. Nothing is stopping you from using "sudo su" if you want to be root for some reason. The new security features prevent certain system files from being modified even if you are logged in as root. This can be disabled if you boot into recovery mode and use the terminal. More info: https://developer.apple.com/library/prerelease/ios/documenta...

> The new security features prevent certain system files from being modified even if you are logged in as root.

As a superuser, this annoys me. As a security conscious sysadmin, I'm mostly OK with this, though the lack of access except via recovery mode makes for a potential aggravation (makes remote assistance hard).

On the plus side, this makes it even less likely that your users manage to mess up their system so much that remote assistance doesn't work anymore.

I believe you turn off protection via recovery mode and then reboot, after which the system behaves like it did before.

None of that is true or helpful. Great username, btw.

so sudo su doesn't work anymore?

It still works. See sibling comment.