[CentOS] Problems after update to 5.5

On Sat, May 15, 2010 at 4:27 AM, Colin Coles <colin at wemoto.com> wrote:
> Hi,
>  I have updated 8 machines so far and 2 are refusing to boot on
> 2.6.18-194.3.1.el5 kernel, they just hang at: 'Starting udev:' but when I
> revert to 2.6.18-164.15.1.el5 kernel they boot fine. Any pointers?

When I ran into a similar problem on a 5.4 system, the hints at

http://bugs.centos.org/view.php?id=2141

were helpful, particularly about increasing the udev logging level.