Hi,

I've had the same issue as is being reported in numerous other forums. I installed CentOS 5.3, and ran an update to go to 5.5. After the update, the system stalls on Starting udev.

Thankfully, Grub can still boot into the old version, which does not stall. I've seen plenty of solutions presented on this, and have tried as many as I can find, but none have helped.

I've been running udev in debug mode to see the log, and it appears to be stalling on a process somewhere, but due to the event based output, the log stalls at a different point of output, so it's proving tricky to see which process is stalling.

The grub loader seems to have two different .img files that it uses to load the configurations, can I use those to find what has been changed?

2.6.18-194.8.1.el5 (not working)
2.6.18-164.el5 (works)

Any ideas on how to track this down?

Regards,
Rob.

"Old version" of what exactly? Old kernel you mean? GRUB "just" loads the kernel so how is it related to an Udev problem?


Point us to those so we don't have to duplicate troubleshooting? And what exactly is it that you have tried?

You should also install and try 2.6.18-194.3.x kernels as well as centosplus ones.

I stayed on 2.6.18-194.3.x and am yet to upgrade to 2.6.18-194.8.x, never got around to it.

Hi

I'm not sure how common this issue is. On my CentOS 5.5 install; I did a similar thing to you in that I upgraded using yum.

I am running the 2.6.18-194.8.1.el5 kernel; and there's no issues with starting udev.

If you have found other locations showing this as a commonly occurring fault please post them here; as well as the troubleshooting that you've done thus far.

Hi,

I pretty much typed "CentOS Starting udev" into Google, and followed the first page of links.

Aside from the fact that one works and the other doesn't.... if I knew the answer to that I wouldn't be asking.

Interesting, didn't know that. Thought each entry was an entire system config or something.

Ah, didn't know I could just uninstall the updated kernel and grab an older one. I've gotten rid of the old one, and am now trying a different version.

Thanks for the help, guys, I think this is just me not understanding how modular linux actually is.

Regards,
Rob.

You can have multiple kernels installed at the same time (watch for available space on /boot partition) and choose any of them every time you start your PC. yum update will never the less suggest to remove older ones by default, but that can be avoided with "yum update -x kernel*" first, and then play with kernels as you see fit.


So do not uninstall any of the kernels, just install another one, referencing by full name and version number:
and do the same if you need kernel-devel kernel-headers, etc.