hda9 has the following features which are not present on the other partitioins: resize_inode dir_index. I admit to not knowing what they do and how they got there ;-)
-- This ext2 filesystem has a rather strange layout (newer ext2/ext3) https://launchpad.net/bugs/59620 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
