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From: - Bobb - on 8 Jul 2010 09:26
Yesterday I got about 100 of these in a row:

Event Type: Warning
Event Source: Disk
Event Category: None
Event ID: 51
Date: 7/7/2010
Time: 10:10:56 PM
User: N/A
Computer: AMDbox
Description:
An error was detected on device \Device\Harddisk2\D during a paging
operation.

I have several drives (2 internal and one external) and lots of partitions
.... how you I translate that into " Harddisk2\D "
Since it says "during a paging operation", I'd assume it's wherever the
pagefile is, but I'd like to know - does it start at drive 0 then drive 1 ,
or does it start at 1 then 2 ?
I'm guessing - "system disk" - but does Partition D = the 4th parition.
(Starts with A then B ?...)
Thanks for any pointers.




From: Paul on 8 Jul 2010 17:37
- Bobb - wrote:
> Yesterday I got about 100 of these in a row:
>
> Event Type: Warning
> Event Source: Disk
> Event Category: None
> Event ID: 51
> Date: 7/7/2010
> Time: 10:10:56 PM
> User: N/A
> Computer: AMDbox
> Description:
> An error was detected on device \Device\Harddisk2\D during a paging
> operation.
>
> I have several drives (2 internal and one external) and lots of partitions
> ... how you I translate that into " Harddisk2\D "
> Since it says "during a paging operation", I'd assume it's wherever the
> pagefile is, but I'd like to know - does it start at drive 0 then drive 1 ,
> or does it start at 1 then 2 ?
> I'm guessing - "system disk" - but does Partition D = the 4th parition.
> (Starts with A then B ?...)
> Thanks for any pointers.

In my case here, Harddisk2 = Disk 2 in Disk Management (the third disk down
in the disk management window).

There is a sort-of recipe here. I wish they're write a technet article on
this, with a *complete* set of options.

http://support.microsoft.com/default.aspx?scid=kb;EN-US;159865

The "D" doesn't mean what you think it does. Options there are D, DR, FT,
and possibly others, followed in some cases by a number. So that isn't a
"drive letter".

And the word "paging" is also a misnomer.

Here, a user attempted to copy files from one drive to another, and
a "paging" error was reported. When you see that error, it doesn't
mean the computer was working on a paging file.

http://www.tomshardware.com/forum/57229-45-write-failed-paging-operation

All we can reasonably assume, is that your computer lost access to
harddisk2, during some kind of file operation. Once you look in
Disk Management, you'll have a better idea which disk that is.

Paul
From: Bert Hyman on 8 Jul 2010 17:49
In news:O5vHlEqHLHA.3560(a)TK2MSFTNGP05.phx.gbl "- Bobb -"
<bobb(a)noemail.123> wrote:

> I have several drives (2 internal and one external) and lots of
> partitions

I started getting those when I installed a USB-connected HD for backup.

It was configured to go to sleep after not being accessed for a while,
and random Windows processes and functions would poke the drive for no
apparent reason and I'd end up with event log entries like the ones
you're seeing.

If you finally track down the drive as being your external drive, that
might be the cause.

I've since replaced that drive with one using an eSATA interface and
don't have that problem any more, even though it too spins down when
idle.

--
Bert Hyman St. Paul, MN bert(a)iphouse.com
From: - Bobb - on 9 Jul 2010 14:08
Thanks guys.

When I checked, I do see that internal are drives 0+1 so the "issue" was
with my fairly new external WD 1 terabyte drive ??

Before posting, I checked that error at the Microsoft link and there is said
" if not the system disk then ignore the error". How useless an info message
is that ? IS there a problem or not ? Should I return under warranty ??

In general I think all of MSFT's troubleshooting is related to " is it our
fault?" If not, then .... we don't care.

Usually that is my backup drive and is turned off .
For now I'll live with it and see if it happens again .If so, then I'll try
to get the data copied to yet another drive. ( when I was shopping I WAS
going to get a Seagate, but reviews said WDC was better. agrrrrrrhhh.)


"Paul" <nospam(a)needed.com> wrote in message
news:i15ge4$rnj$1(a)speranza.aioe.org...
>- Bobb - wrote:
>> Yesterday I got about 100 of these in a row:
>>
>> Event Type: Warning
>> Event Source: Disk
>> Event Category: None
>> Event ID: 51
>> Date: 7/7/2010
>> Time: 10:10:56 PM
>> User: N/A
>> Computer: AMDbox
>> Description:
>> An error was detected on device \Device\Harddisk2\D during a paging
>> operation.
>>
>> I have several drives (2 internal and one external) and lots of
>> partitions ... how you I translate that into " Harddisk2\D "
>> Since it says "during a paging operation", I'd assume it's wherever the
>> pagefile is, but I'd like to know - does it start at drive 0 then drive 1
>> , or does it start at 1 then 2 ?
>> I'm guessing - "system disk" - but does Partition D = the 4th parition.
>> (Starts with A then B ?...)
>> Thanks for any pointers.
>
> In my case here, Harddisk2 = Disk 2 in Disk Management (the third disk
> down
> in the disk management window).
>
> There is a sort-of recipe here. I wish they're write a technet article on
> this, with a *complete* set of options.
>
> http://support.microsoft.com/default.aspx?scid=kb;EN-US;159865
>
> The "D" doesn't mean what you think it does. Options there are D, DR, FT,
> and possibly others, followed in some cases by a number. So that isn't a
> "drive letter".
>
> And the word "paging" is also a misnomer.
>
> Here, a user attempted to copy files from one drive to another, and
> a "paging" error was reported. When you see that error, it doesn't
> mean the computer was working on a paging file.
>
> http://www.tomshardware.com/forum/57229-45-write-failed-paging-operation
>
> All we can reasonably assume, is that your computer lost access to
> harddisk2, during some kind of file operation. Once you look in
> Disk Management, you'll have a better idea which disk that is.
>
> Paul


From: Paul on 9 Jul 2010 14:30
- Bobb - wrote:
> Thanks guys.
>
> When I checked, I do see that internal are drives 0+1 so the "issue" was
> with my fairly new external WD 1 terabyte drive ??
>
> Before posting, I checked that error at the Microsoft link and there is said
> " if not the system disk then ignore the error". How useless an info message
> is that ? IS there a problem or not ? Should I return under warranty ??
>
> In general I think all of MSFT's troubleshooting is related to " is it our
> fault?" If not, then .... we don't care.
>
> Usually that is my backup drive and is turned off .
> For now I'll live with it and see if it happens again .If so, then I'll try
> to get the data copied to yet another drive. ( when I was shopping I WAS
> going to get a Seagate, but reviews said WDC was better. agrrrrrrhhh.)
>
>
> "Paul" <nospam(a)needed.com> wrote in message
> news:i15ge4$rnj$1(a)speranza.aioe.org...
>> - Bobb - wrote:
>>> Yesterday I got about 100 of these in a row:
>>>
>>> Event Type: Warning
>>> Event Source: Disk
>>> Event Category: None
>>> Event ID: 51
>>> Date: 7/7/2010
>>> Time: 10:10:56 PM
>>> User: N/A
>>> Computer: AMDbox
>>> Description:
>>> An error was detected on device \Device\Harddisk2\D during a paging
>>> operation.
>>>
>>> I have several drives (2 internal and one external) and lots of
>>> partitions ... how you I translate that into " Harddisk2\D "
>>> Since it says "during a paging operation", I'd assume it's wherever the
>>> pagefile is, but I'd like to know - does it start at drive 0 then drive 1
>>> , or does it start at 1 then 2 ?
>>> I'm guessing - "system disk" - but does Partition D = the 4th parition.
>>> (Starts with A then B ?...)
>>> Thanks for any pointers.
>> In my case here, Harddisk2 = Disk 2 in Disk Management (the third disk
>> down
>> in the disk management window).
>>
>> There is a sort-of recipe here. I wish they're write a technet article on
>> this, with a *complete* set of options.
>>
>> http://support.microsoft.com/default.aspx?scid=kb;EN-US;159865
>>
>> The "D" doesn't mean what you think it does. Options there are D, DR, FT,
>> and possibly others, followed in some cases by a number. So that isn't a
>> "drive letter".
>>
>> And the word "paging" is also a misnomer.
>>
>> Here, a user attempted to copy files from one drive to another, and
>> a "paging" error was reported. When you see that error, it doesn't
>> mean the computer was working on a paging file.
>>
>> http://www.tomshardware.com/forum/57229-45-write-failed-paging-operation
>>
>> All we can reasonably assume, is that your computer lost access to
>> harddisk2, during some kind of file operation. Once you look in
>> Disk Management, you'll have a better idea which disk that is.
>>
>> Paul
>
>

I would recommend going to the Western Digital site and downloading
DataLifeguard tools for disk testing. I don't know what restrictions
exist on that software, like what interfaces it doesn't work on.
Perhaps if you run a diagnostic, it will confirm there is some
kind of problem. The download page, specifies tools as a function of
the drive model, so presumably they'll list a test tool that is
relevant.

The OS is written by Microsoft, such that kernel operations remain
responsive. Now, if you have some software present, that violates
any of the real time properties, or inserts shims or the like in
a software stack, that can change the properties in a way not
anticipated by the OS designers. An example of intrusive software
might be some AV software. Googling on "Delayed Write" failures,
from the past, might dig up software situations, where some
third party addition has upset proper OS operation.

Some hardware operations on disks, have longer timeout constants than
perhaps the driver is willing to wait. Say the disk will attempt for
20 seconds, to read a flaky sector. And the OS disk driver will only
wait 5 seconds for the disk to respond. That could result in log
entries being generated, and perhaps even a consistency problem.
There are some disks, where a parameter is changed, to make that
less of an issue in certain situations. Western Digital makes RE
drives, where for twice the price of a regular disk, they change
the timeout constant to somewhere around 5 to 7 seconds. The purpose
of that, is so a severe disk issue, won't cause a RAID array to go
offline. (The disks are intended for usage in RAID arrays.) At one
point, some of the WD disks, supported the usage of a utility, to
flip the timeout constant, without paying an exorbitant premium
to WD, but they closed that loophole.

So there could be physical reasons for this, such as a bad brand
new disk. Or, it could be software induced (for more reasons than
I know about).

I'd start with a backup first, leaving the drive powered off
until you're ready to run the transfer. Connect a replacement disk,
and make sure all your data is safe.

After that, try a chkdsk, and see if any problems are detected
with the file system(s) on that disk. If there is a persistent
problem, and it is inserting problems in the file system structures,
the longer you leave it, the harder it would be for chkdsk to
repair it.

Shut down, and run the WD diagnostics. (Some diagnostics use read
only testing, with options to do more destructive write testing.
I usually just stick with read testing.)

The SMART statistics kept by the drive, have a few key parameters
that tell you about drive health. I couldn't decode that info,
if my life depended on it :-) But one key parameter, is the
"Pending" count. That tells you, how many suspect sectors the
drive has detected. On the next write attempt to those sectors,
the drive will have to decide whether that sector is dependable
or not. If the next write fails to work, then the sector is
spared out. Seeing a persistent pending count, might be a
sign of trouble to come. I don't think I've seen any "Pending"
accumulate on drives here, when I've looked at the SMART stats.

The file system, also has mechanisms for tracking "bad clusters",
and that is a search term you could try, for more information
on where that kind of thing might be logged. For me, the
logging of physical disk problems is more important, as I
spook easily, and at the first sign of trouble, I install
a new disk. It's one of the reasons I have so many
spare disks sitting on a table in the junk room :-)

Paul
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