Random shutdown on Macbook
I have been using my current macbook for about a year and nothing seriously has happened on it. But yesterday afternoon it randomly shut down while on battery. There was no warning signs at all. I lost all my unsaved stuff. After its shutdown, it could not be turned on until I plugged in the power. It happend again yesterday evening in the exactly the same situation.
After these happened, I did two things and hope they will solve my problems.
(1) Reset SMC (System Management Controller) by following this article.
(2) Recalibrate the battery
I will give update on this issue.

