Description of problem:
After a succesful install of RHEL 5 to a 3ware SATA RAID Array, the system then
fails to boot.  Grub starts (without graphics) and reports the following:

Booting 'Red Hat Enterprise Linux Server (2.6.18-8.el5)'

root(hd1,0)
 Filesystem type is ext2fs, partition type 0x83
kernel /vmlinuz-2.6.18-8.el5 ro root=LABEL=/ rhgb quite

Error 15: File not Found

Press any key to continue


Version-Release number of selected component (if applicable):

Kernel 2.6.18-8.el5 and kernel 2.6.18-8.1.1.el5
3Ware 9550SX Firmware 9.3.0.7 (tried earlier versions as well)
Tyan S2895 Motherboard with Bios 1.04 and 1.03 (1.05 fails to even install RHEL)

How reproducible:
Fails to boot every time using two different kernels and several different
combinations of controller and motherboard firmwares.  The install part works
with firmwares 9.3.0.7 (3ware) and 1.0.4 (Tyan) and earlier, but again it fails
to boot after the install is finished (even before firstboot config)

Steps to Reproduce:
1.  Install RHEL5 from CD to a 3Ware SATA RAID 5 array
2.  Reboot after succesful install
3.  Watch grub load but fail to boot system
  
Actual results:
System fails to boot past grub load

Expected results:
System boots to RHEL5 succesfully


Additional info:
No clue here...