And as I said you should use labels. I didn't ask you to use the raw device names.Quote:
Well mounting my MyBook is only possible with the UUID's, the dev's don't work as I said
And what do you want to do with /tmp? You can't remove the sticky bit, otherwise this folder would become useless. Also removing the execution rights is meaningless because that controls the browsability of folders. Putting it onto another partition and mounting it with noexec could secure your system a bit, but it could also hinder some applications working properly anymore. You should rather make sure you don't have any security holes in your programs.
In respect of the rights you should give the user and users options only to partitions which need them. And of course you should use native file Linux systems for best user rights management.