wow, that was a genial catch, thank you very much =) With this tip I managed to find what was wrong in the code and then fixed some other stuff and now it seams that my ext4 reader is fully working correctly =D It did come to my mind the size of group descriptors many days ago, but I had supposed that the _hi elements would be filled with zeroes, not that they would be completely removed. Also good to know about debugfs and dumpe2fs thanks again for all the help and sorry for any disturbance, =) -- Felipe Monteiro de Carvalho -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html