Originally Posted by tarvoke
it's very likely that to recover the internal storage, you could simply try the same fix I've (and others have) had to do more than a few times, namely a complete reinstall.
intsdcard is actually just a loop mounted file (vfat.img as you saw) on the main internal flash - any bad blocks should be recognized and dealt with when reinstalling the whole system.
I tried to reinstall the system but I don't know how. I tried:
1- going to 'system->privacy->factory data reset'
2- downloading the update.zip + gapps.zip for the Allmine version and rebooting with them.
But after the update the system was exactly in the same status, nothing had changed.
Do you know how could I reinstall the whole system? Just got the device like 1 month ago and still learning some basics...