Hi all

I did something incorrectly about link command.
I try to make a link from a sub-dir to root dir, but I use the following command:
link / zzz

the result is sub-dir "zzz" was linked to "/"

Then I want to remove the "zzz" by using unlink command:
unlink zzz
It say that "Device busy"
I cannot rm nor rmdir. I can only rename it but cannot move it to any directory.

I try to boot to single user mode and try to unlink it again but it still device busy.

What happen to "zzz"
How can I delete the "zzz" without lost any content in my root dir?