>>>>> "Eric" == Eric Anderson <ewa@appl...> writes:

    Eric> There's evidence of multiple problems here, so you should
    Eric> perform some fault isolation:

    [...]

    Eric> 2. The Bad self ID messages on Mac indicate a different problem:  the
    Eric> FireWire bus isn't working properly.  You should try other
    Eric> FireWire devices on this Mac (alone, not in combination with
    Eric> the suspect DVD drive or anything else) and try to determine
    Eric> if the Mac is broken, or if the problem is limited to the DVD
    Eric> drive.  If other devices seem to work, try to use the DVD with
    Eric> a shorter FireWire cable, or place it behind a FireWire hub
    Eric> that is connected to AC power.  These steps may help isolate
    Eric> the problem, and might meet your immediate need of running the
    Eric> installer.

I flagged this message but then got busy with work and never responded.

I picked up a powered Firewire hub and connect the device through that.
In that configuration, everything works fine.  I sucessfully upgraded
the iMac.  I didn't go through any of the other steps as at the time, I
had no other firewire devices I could try.

Unfortunately, I paid insufficient attention to the "recommendation" to
upgrade the firmware and now have a dead video board :-(

regards,

roland
--
                       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlen...                            6818 Madeline Court
roland@astr...                           Brooklyn, NY 11220
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