[SLUG] Re: Problem (external firewire drive)

[Ross Mitchell <rossm@xxxxxxxxxxxx>]

> I have an external firewire case with an 80gb 7200rpm drive - my prob
> is I can run 20, 40 and 60gig 5400rpm drives no problem, but when I
> stick a 40, 60 or 80gb 7200rpm drive in the damn thing works sometimes
> if at all, I have tried numerous cables, other drives, operating
> systems, platforms etc but I still get the same problem.

        Sounds to me that the power supply is not up to it.  I would 
expect the
faster drives to be thirstier or maybe they are more demanding of their 
supply limits,
maybe the power is out of their spec.

        Measure the +5 and +12 supplies while they are operating.

Good luck
   Ross