"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.