How to disable account on OS X Mavericks I have an account on my OS X Mavericks system that I want to disable so it cannot be used for login. I would not like to delete the account permanently but rather disable it temporarily.

I believe that this was possible in Lion – but maybe my memory plays tricks on me?
You can disable a user account by setting their shell to /usr/bin/false.

Either run chsh -s /usr/bin/false &lt;username&gt;, or change it in Users &amp; Groups → Advanced Options. To change it back, run chsh -s /bin/bash &lt;username&gt;.