External USB drive looses connection during transfer

[Graaben]

I have win XP SP3 and a Verbatim external hard disk (1TB). During backup to
the drive or transfering of many files it "hangs" and say "Can't find the
file...". I can then still see the drive in explorer but the volume name is
gone and the size reporting 0 Byte. And it is unaccessible. When I restart it
it works again. Single file transfers is generally ok, but not many.

....and...it works quite alright in a Vista laptop so the drive itself is ok.

Solutions?

 

[philo]

Re: External USB drive looses connection during transfer


"Graaben" <Graaben@discussions.microsoft.com> wrote in message
news:97EBD861-41E7-499E-900C-A649348F339D@microsoft.com...
> I have win XP SP3 and a Verbatim external hard disk (1TB). During backup
to
> the drive or transfering of many files it "hangs" and say "Can't find the
> file...". I can then still see the drive in explorer but the volume name
is
> gone and the size reporting 0 Byte. And it is unaccessible. When I restart
it
> it works again. Single file transfers is generally ok, but not many.
>
> ...and...it works quite alright in a Vista laptop so the drive itself is
ok.
>
> Solutions?

If you also used the same USB cable when you tested it on the laptop,
try a different USB port

 

[Graaben]

Re: External USB drive looses connection during transfer



"philo" wrote:

>
> If you also used the same USB cable when you tested it on the laptop,
> try a different USB port
>
>
>

It was the same cable and I have tested it in (2 out of 4) ports.
(Motherboard Abit AV8 with Via KT800 Pro chipset)

Driver issue (delayed write?????) or VIA issue?

I should say that I originally had SP 2 but upgraded in hope of better luck

 

[R. McCarty]

Re: External USB drive looses connection during transfer

USB drives generally have a throughput cap of just under 30 Meg
per second. If the drive is USB 2.0 and the computer only has a
single enhanced ( USB2 controller ) then it's likely the transfer is
saturating the USB bus ( Bandwidth ). With a single USB 2.0
controller moving to different USB sockets won't make a difference.

"Graaben" <Graaben@discussions.microsoft.com> wrote in message
news:81720E5C-BDD1-40A9-8D71-5CC1223765B4@microsoft.com...
>
>
> "philo" wrote:
>
>>
>> If you also used the same USB cable when you tested it on the laptop,
>> try a different USB port
>>
>>
>>
>
> It was the same cable and I have tested it in (2 out of 4) ports.
> (Motherboard Abit AV8 with Via KT800 Pro chipset)
>
> Driver issue (delayed write?????) or VIA issue?
>
> I should say that I originally had SP 2 but upgraded in hope of better
> luck

 

[Graaben]

Re: External USB drive looses connection during transfer



"R. McCarty" wrote:

> USB drives generally have a throughput cap of just under 30 Meg
> per second. If the drive is USB 2.0 and the computer only has a
> single enhanced ( USB2 controller ) then it's likely the transfer is
> saturating the USB bus ( Bandwidth ). With a single USB 2.0
> controller moving to different USB sockets won't make a difference.
>

What do you mean by saturating the bus? I mean; why does it happen here and
not to everyone connecting a USB drive?

 

[Twayne]

Re: External USB drive looses connection during transfer

Well, if it has a loose connection, that's the first thing to look at.
All connections need to be tight and reliable so they cannot become
accidentally disconnected.


> I have win XP SP3 and a Verbatim external hard disk (1TB). During
> backup to the drive or transfering of many files it "hangs" and say
> "Can't find the file...". I can then still see the drive in explorer
> but the volume name is gone and the size reporting 0 Byte. And it is
> unaccessible. When I restart it it works again. Single file transfers
> is generally ok, but not many.
>
> ...and...it works quite alright in a Vista laptop so the drive itself
> is ok.
>
> Solutions?

Fix the loose connection.

 

[Graaben]

Re: External USB drive looses connection during transfer



"Twayne" wrote:

> Well, if it has a loose connection, that's the first thing to look at.
> All connections need to be tight and reliable so they cannot become
> accidentally disconnected.
>
>

> Fix the loose connection.


"Looses connection" doesn't refer to the physical cable but windows stops
being able to write to the disk.

I've tried 2 different cables and even tried to "move" the connectors while
transfering a single file but there is no connectivity problem then.

 

[Elmo]

Re: External USB drive looses connection during transfer

Graaben wrote:
>
> "Twayne" wrote:
>
>> Well, if it has a loose connection, that's the first thing to look at.
>> All connections need to be tight and reliable so they cannot become
>> accidentally disconnected.
>>
>>
>
>> Fix the loose connection.
>
>
> "Looses connection" doesn't refer to the physical cable but windows stops
> being able to write to the disk.
>
> I've tried 2 different cables and even tried to "move" the connectors while
> transfeRring a single file but there is no connectivity problem then.

As in LOSES Connection, not LOOSES (LOOSENS) connection, huh?

--
Joe =o)

 

[Graaben]

Re: External USB drive looses connection during transfer



"Elmo" wrote:

>
> As in LOSES Connection, not LOOSES (LOOSENS) connection, huh?
>

I stand corrected: LOSES....