i can flash the doc successfully, but it doesn't boot

[Ivan]

Hi all:
    I reinstall my rh8.0 today, and i try to flash the image(the one i
download from cwlinux) to the doc on my m810lmr board, nothing error
message(the same as before, all seem normal), and when i reboot, it cannot
boot.
    I try another DOC, and the same problem.
    I'm sure no problem with the image.
    I got the same trouble when i upgrade my linux to rh9.0 before, so i
changed 
something, then it ok, but i can't remmber what i have done.....
    Any advices?
    Thanks in advance!

                                                                 ivan 
    





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