Hello

[...]
>  
> After CD install, it will reboot to setup the system, but boot failed.
> This is the message:
> ------------------------------------------------------------------------
[...]
> kernel /boot/vmlinuz-2.6.9-42.0.3.ELsmp ro root=LABEL=/ rhgb quiet
[...]

Remove the "rhgb quiet" from grub boot line: we will be able
to see more information as why it fails

(my guess: SMP kernels allocates interrupts different way
than the install UP kernel: disk controller does not get
any and device cannot be found
Most likely some additional boot options will be needed
in your grub conf: alike acpi=off .. etc)

Jarek
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