Hard link a directory

Is it possible to Hard link a directory? Some people on google say it is possible and some say it is not possible. I haven't seen a working solution though.

Historically its always been impossible. My linux still reports it as being impossible. Ive never witnessed it working.

It is impossible. If you must link directories, use a soft link.

Hardlinks on directories are not impossible by design - the mkdir system call produces them, look at the "." and ".." entries in the newly created directory - but they are dangerous, because this capability may produce loops in the file hierarchy or otherwise corrupt the file system. (taken from the POSIX man page for the link system call/function, see: Man Page for link (POSIX Section 3) - The UNIX and Linux Forums). Therefore they are not allowed on most Unix implementations.