Hi, I use "e2fsck" to repair the damaged ext4 device. The message was followings. ------ # ./e2fsck /dev/sdb3 e2fsck 1.41.3 (12-Oct-2008) Superblock has an invalid ext3 journal (inode 8). Clear<y>? --- Why e2fsck tells me "ext3"? It looks the message was wrong or e2fsck doesn't recognize ext4 correctly. Thanks! Miao Xie -- 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