[CentOS] is udev necessary?

[Rudi Ahlers]

Hi all

I recently setup a CentOS 5.2 server, running XEN (using HyperVM), and
then moved the hard drive from my test box to my Intel server.The
problem I now have, is that it doesn't bootup properly. Shortly after
I see the udev service started, the machine reboots. This keeps on
going the whole time.

I have managed to kill udev on start-up (with CTRL + C), and then it boots up.
So, do I need udev? And what is it's purpose?

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Kind Regards
Rudi Ahlers