[PROBLEM] No reboot after unplugging

[kas_27_es]

Well yesterday I shut off my rpi using the shut down menu...

Today it doesn't start. The problem is the same as described above (in my first post).

I still didn't format the SD card, and when I plug it into my laptop it can't mount the second partition (xbian-beta2), it only mount first partition (xbian-boot)

I don't know how to get any dmesg, or any other information.

Should I reinstall again? Is there any way to recover my old installation before I format the SD card?

Could the problem be in my SD card?

Please, I need some help...

Thanks.