Avoid automatic shutdown

Question

I have a MacBook pro running Lion. Usually, I need to run tasks that takes hours... so I just leave the laptop working before going to bed.

When I wake up, I notice that it tried to shutdown the system. How do I notice this? Well... all apps are closed except for iTerm (which always stops shutdown process when there is more than one tab open).

I tried to search the energy saving settings but there is nothing related to this... I would like to see how to prevent this behavior.

Answer 1

1. Make sure your power adapter is connected to the Mac while you are sleeping.

2. In the Power Adapter section in Energy Saver, make the "computer sleep" -> "never".

3. You don't want your screen is on when you are in bed right? So make "Display sleep" -> some minutes.

4. Uncheck "Put the hard disk(s) to sleep when possible" and "Restart automatically if the computer freezes".

That should work!