GT wrote:
>
> "I.C. Koets" <I.C.Koets@student.tudelft.nl> wrote in message
> news:4742331A.377C3A99@student.tudelft.nl...
> >
> >
> > "Kardon Coupé" wrote:
> >>
> >> > Then trouble started, some weeks after I had added the third physical
> >> > disk. It alone is having trouble writing.
> >>
> >> What is your PSU rating? Maybe you need more power with having the extra
> >> HDD? or the PSU is just on it's last legs....I know I had a problem with
> >> hardware once, and it stemed as the PSU not giving enough power...
> >>
> >> It might not be that, but it is another avenue to look down....
> >
> > PSU is rated 650 W, and that should really suffice very well. It would be
> > quite odd if the power supply only affected one logical disk. Nonetheless,
> > I'll monitor the power voltages.
>
> A total power rating of 650W, whilst it sounds high, is probably a false
> figure. Power supplies provide power on several lines/channels (not sure of
> the correct term) and it is possible to overload one channel of a power
> supply with significantly lower demand than its quoted rating.
>
> I used to use a 230W PSU to happily powers the same setup as you have (minus
> 1 drive). I now use a (silent) 300W PSU. If power is the problem, the I
> would have thought the problem would show itself in other ways, not just 1
> partition. So to rule out a power problem, try unplugging 1 hard disk -
> leave the system drive and the faulty drive (as you used to run it). If the
> faulty drive starts to behave again, then it is either a power related
> problem or a controller/configuration problem. If reducing the power load by
> 1 drive makes no difference, then it is probably not a power problem. You
> could then try copying all data from the troublesome partition to another
> drive and format the dodgy partition - perhaps the FAT table is in a pickle,
> or out of space, or so badly fragmented that it can't cope (unlikely). As it
> is not the boot drive, you should be able to do all of this within Windows
> without a reboot.

Hooking up the other drives to an external power supply did nothing to the
problem. Power supply does not seem to be the cause.