SD card "damaged" after every reboot / power off When I turn off my phone, next time it says SD card is damaged and all data is gone, I can only reformat it. The phone is "gionee iq275" (also known as "Fly" in Russia), Android version is 2.3.4. What can be the source of problem? How can I get rid of it? I know, the phone is crap, but at the moment just throwing it away and buying another is not a solution.
Not sure why that happened, but I got rid of the problem by making 2 things:


Performed full format of the SD card, and
Safely eject SD card before reboot of poweroff (not sure if it's necessary)


After that, I didn't see this problem again for now.

Update

That crappy phone sometimes damages SD card content regardless of whether the techniques written above are used... it seems to be a device-specific problem. So, my advice (if anyone else reads this) - don't buy "no-name" Chinese phones! :D