Any version of ext filesystem will recreate the lost+found folder when mounted. You can't get rid of it, but it should be an empty folder, taking little space.
IIRC, ext2 does not .... as it has no journalling ....
lost+found exists on nearly every *nix filesystem, including ext2
, its purpose is to allow the "recover" "lost files
" because of an unclean unmount of a filesystem, when "files are found
" from fsck
The purpose of the journal is different, in that when present the latest write operations (possibly not completed at time of a crash) will be re-applied upon remount of the filesystem, thus decreasing the possibility of inconsistent behavior.