BusyBox `ln -s`: How do I create symlink to a directory on external SD-card? How do I create symlink to a directory on external SD-card? Do I have to edit /etc/passwd and add user or root to the sdcard_r group--since, I see that the /storage/ location is owned by sdcard_r? Do I have to change the partition type, ie filesystem of the external sd-card?

I've searched through the previously-asked questions, as well as google-search about the ln function in busybox; however, I'm not able to figure out why I keep getting an error creating link failed File already exists when I try to run ln -s /storage/sdcard1/original_dir/ /storage/sdcard0/DCIM/sym_dir .  

I have root privileges and, as far as I can tell, /storage/&amp; sdcard1 are not symlinks themselves. I appreciate any and all helpful comments.  Thanks.
The rootfs (/) as well as /system have to be mounted with rw permissions.

So, to check for that execute # mount |grep -i rootfs and # mount |grep -i '/system'

If you don't see rw for the permissions, do # mount -o remount,rw / and/or # mount -o remount,rw /system