LinkIt Smart -Is the board power fail safe?

I am using LinkIt Smart board. Since it has OpenWRT Linux, is the board (Linux file system) power fail safe?
i.e. While using board if power goes off, is there a chance that the board will fail to boot next time?
I didn’t find the information in LinkIt Smart documents.
Also I am not sure if the board requires a command like shutdown?


Sorry to correct my mistake, you can access fail-safe mode by press [f] and hit [Enter] while booting.