As I understand it, some distros offer udev as an option; some as the default device file. For the distros which offer udev as an option, on installation you may choose traditional static device files, or udev (devices built as needed, from what I've seen).
Save yourself some headaches; re-install and select static devices.
If you propose to continue with udev, then look in /etc. You may have a udev subdirectory. The udev rules file is the heart and soul of udev. If the rules are structured properly, you will not have any problems with udev. However, what some packager half-way around the world thinks are proper rules may not conform to what you think they should be.
I've googled and not found much in the way of help files, tutorials, guides, etc., on how to structure those rules. Therefore, I'm struggleing with udev, myself. Though, my struggle is just a search for understanding, because SuSE on an internal IDE hard drive isn't giving me problems.
I hope I've been able to give you ideas on what to search for via google or some other search engine.