Kerne 2.6.15-55 works, later does not (Raid1)

[hitri]

Hi,

I have a problem with kernels later then 2.6.15-55. I'm useing Ubuntu server 8.04 LTS with Raid1. When I trying with later kernel, my server find the kernel, but refuse to boot. It looks like it can't find boot disc. Then it goes to kind of dos mode.
Could you help me please?

hitri

[falko]

Do you use special or uncommon hardware?

[hitri]

No, I started with Ubuntu 6.06LTS, and I have had no problem. This happened after upgrade to 8.04LTS

[falko]

Do you remember the error message?

[hitri]

I get this on startup
Loading, please wait...
Check root= bootarg cat /proc/cmdline
or missing modules, devices: cat /proc/modules ls /dev
Reading all physical volumes This may take a while...
ALERT! /dev/md1 does not exist. Dropping to a shell!

BusyBox v1.1.3 (Debian 1:1.1.3-5ubuntu12) Built-in shell (ash)
Enter 'help' for a list of built-in commands.


(initramfs)




Kernel alive
kernel direct mapping tables up to 100000000 @ 8000-d000