From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)
Description of problem:
The system fails to boot giving a kernel panic message when trying to boot
with the 2.4.9-12 kernel. The 2.4.3-12 kernel boots fine. The system
uses a SuperMicro 370DLE motherboard (using 1 processor) and Promise
Ultra100 Tx2 IDE controller. The panic message occurs when trying to
mount the root filesystem.
Version-Release number of selected component (if applicable): 2.4.9-12
Steps to Reproduce:
1. Reboot the machine using the latest RedHat provided kernel
Actual Results: System hangs
Expected Results: System should boot
Would you mind giving the panic message ? Without the text there's nothing I can
Here are the last lines that appear on the console before the system hangs:
ide-floppy driver 0.97.sv
request_module [ide-cd]: Root fs not mounted
hda: driver not present
VFS: Cannot open root device "306" or 03:06
Please append a correct "root=" boot option
kernel panic: VFS: Unable to mount root fs on 03:06
I know things scroll by fast, but is there ANY indication that earlier messages
show anything about promise controllers ?
The message indicates that the root device isn't found, /dev/hda in specific
There are no earlier messages about the Promise controller. There is nothing
in the messages file either. Unfortunately I have to reboot the machine
immediately with the older kernel as this is our Web server.
With the 2.4.3-12 stock kernel, there is no problem whatsoever and we have no
additional boot options added to the original lilo.conf file except the
Ok one last question
if you type "linux ro root=/dev/hde6"
does that work ?
(no need to look at anything, should work immedatly or not at all)
Same results with system hanging at same point.
The solution is to recompile the kernel with the option "Boot off-board
chipsets first support" to Yes. The stock 2.4.9-12 kernel supplied by RedHat
will not boot with the SuperMicro 370DLE, Promise Ultra100 TX2 combination.