Hello Everyone,
I have a Dell Optiplex GX280.
When I had finished installed Redhat Enterprise WS 4.0 UPDATE2,the compuer can not reboot.
It says :
Fatal exception: Panic in 5 seconds
Kernel panic- not syncing: Fatal exception

Does anyone know how to solve this problem?
Thanks.

I've had that occur and the news is not good. Did you use up2date to update the kernel version? Since having experienced that problem I now use the command line to install new kernels. I was forced to re-install RHEL WS4 when it happened to me. I was able to retrieve the data before overwriting it by using Simply Mepis, but if you don't have any significant data there yet it might be easier to just reinstall, and choose the option (which I think is there by default) not to automatically update the kernel.

I have not update the kernel version,but install the system with UPDATE2 CDs.
The kernel version is 2.6.9-22.EL.
How can i do now?

Thanks in advance.

This may work, although it didn't solve the problem I was facing. My kernel panic happened after a major up2date download, by which time the original installation disks were unable to assist. Get your installation disk 1, and set the BIOS settings to boot from the CD. Insert the disk as if you were going to reinstall the distribution. You will be presented with an installation screen. Ignore the installation options and go to the bottom of the screen where there will be a cursor. Type in:

linux repair

and it will ask you to insert your disks from one to four. Actually choose the option to test the media, just to make sure that it isn't corrupted. After the repair has been completed, restart your machine. As I said, it didn't work for me, but it may work on top of a fresh installation. If that doesn't work, it may be necessary to hassle the Red Hat tech support people. Using the terms 'kernel panic' in the RH knowledgebase isn't very helpful - what it turned up was way beyond my level of comprehension.