Kernel Panic with 2.6.3 [Resolved]

Question

I have both Kernels 2.4.25 and 2.6.3 installed. The 2.4.25 Kernel boots very good. I also have copied the vmlinuz26 into the bootlader directory.
I have 3 OS installed. WinXP, Suse Linux and Arch. I use the Suse grub boot manager to load the Arch System. And it works fine but loading the 2.6.3 Kernel ends up in : Kernel Panic unable to mount fs
here is my menu.lst entries for linux.
title Arch Linux 0.6 (Widget) 2.4.25
#title  Arch Linux
root   (hd3,2)
kernel (hd1,0)/arch/boot/vmlinuz root=/dev/discs/disc3/part3 ro agp_try_unsuppo
rted=1
title Arch Linux 0.6 (Widget) 2.6.3
#title  Arch Linux
root   (hd3,2)
kernel (hd1,0)/arch/boot/vmlinuz26 root=/dev/discs/disc3/part3 ro acpi=off  agp_try_unsuppo
rted=1
following files are in /arch/boot/
System.map, kconfig, vmlinuz, System.map26, kconfig26, vmlinuz26
Perhaps somebody can help me.
Thx
PLZ see also 2. POST

Answer 1

I have 4 disks.
hda is my windows primary (ide1 Master)
hdb is Suse primary (ide1 Slave)(where the bootloader is located in hdb1)
i use not the arch loader grub but the suse loader grub
hde is a third device hde is on ide3 Master
hdg is the Arch Linux device (ide4 Master)
but i use the MBR of ide1 (and therefore i locally copied the boot partition from Arch to hdb1 into /arch/boot; i want to start from the suse boot partition; and as i said works fine with the old kernel) and try to start the Arch Linux kernel from there with root at hdg3. Yes i used standard (auto) partitioning from Arch Linux.
The above quote is a copy of the menu.lst from the suse boot loader grub
here is the whole code
# Modified by YaST2. Last modification on Mon Feb  9 18:05:16 2004
# Modified by Kitgo. Last Modification on Wed Feb 19 16:03 2004
color white/blue black/light-gray
default 0
gfxmenu (hd1,0)/message
timeout 15
title Arch Linux 0.6 (Widget) 2.4.25
#title  Arch Linux
root   (hd3,2)
kernel (hd1,0)/arch/boot/vmlinuz root=/dev/discs/disc3/part3 ro agp_try_unsuppo
rted=1
title Arch Linux 0.6 (Widget) 2.6.3
#title  Arch Linux
root   (hd3,2)
kernel (hd1,0)/arch/boot/vmlinuz26 root=/dev/discs/disc3/part3 ro acpi=off agp_
try_unsupported=1
title windows
    root (hd0,0)
    chainloader +1
title SuSE 8.2 Linux
    kernel (hd1,0)/vmlinuz root=/dev/hdf2 vga=0x317  acpi=off hdh=ide-scsi hdhl
un=0 splash=silent showopts
    initrd (hd1,0)/initrd
title floppy
    root (fd0)
    chainloader +1
title SuSE 8.2 failsafe
    kernel (hd1,0)/vmlinuz.shipped root=/dev/hdf2 showopts ide=nodma apm=off ac
pi=off vga=normal nosmp noapic maxcpus=0 3
    initrd (hd1,0)/initrd.shipped
the error message is the following
UDF - No partition found
XFS: bad  magic number
XFS SB validate failed
VFS: unable to mount root fs on unknown block (0,0)
but why? is it just because the ArchDisk is on ide4 ?
hope this helps