Can anybody tell me how devfs works?

I have a problem with some devices (DVD, scanner). I can't open/mount it.
I always got the startup error that .devfsd wasn't removable on startup.
/dev/.devfsd was empty. So I removed it manually ...
Not good !
I still can boot, and the same devices are still accessible and the same
not.

Now I don't see the point of having a .devfsd.

For instance, there is a /dev/hda, but there is no /dev/hdc (DVD) but in
the section ide, I do can get to the ide DVD.

Thx

Greetz Matata

Matata enlightened us with:
> Now I don't see the point of having a .devfsd.

Most .blablabla files that are empty are there as a marker file. It's
not the contents of that file that matters, it's the fact that the file
is there.

Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?