External USB drive looses connection during transfer

[Guest 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?

[Guest 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

[Guest 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

[Guest 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

[Guest 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?

[Guest 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.

[Guest 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.

[Guest 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)

[Guest Graaben]

Re: External USB drive looses connection during transfer

 

 

 

"Elmo" wrote:

>

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

>

 

I stand corrected: LOSES....