MIUI 3.7.5 don't mount my external SD card

Jul 10, 2013
I just started and I'm in love with MIUI. I had flashed my Note GT-N7000 only once to install Jelly Beer 4.2.2 but is discontinued one month ago. I installed MIUI 3.7.5 for Note I9220 in my Note with zero problems. I love MIUI but I have a very big problem: MIUI don't mount my external 32GB SD card :( and if I don't remove it the battery drains faster.

I know SD card is ok because it works on other mobile phones and computers correctly.

In the graphs of the battery you can see when I remove the SD card with 12% battery and 3 hours later is 10%.

Any idea how to make mount the SD card?

Thanks in advance and congratulations to all MIUI developers.