Power Options - Turn off hard disk problem

[Günter Wirth]

Hi,

I set the < Power Options> <Turn off hard disk> to 30min, but the harddisk
is still always running. I tried to find out which program is writing to the
harddisk and saw the following (with filemon.exe):

explorer.exe IRP_MJ_CREATE
explorer.exe IRP_MJ_QUERY_VOLUME_INFORMATION
explorer.exe IRP_MJ_CLEANUP
explorer.exe IRP_MJ_CLOSE

The explorer call this every minute once for each harddisk on my system.

Has anybody an idea how to turn off that?

Regrads,
Günter

 

[Brad Combs]

Could be Prefetch?

Take a look at this key..

HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryManagement\Prefet
chParameters\EnablePrefetcher

Values are...

0 - No prefetch
1 - Prefetch applications only
2 - Prefetch boot only
3 - Prefetch both applications & boot

HTH,
--
Brad Combs
Imago Technologies, LLC

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[Günter Wirth]

Hi,

Thank you for the detailed answer.

I turned the prefetch off (0), but it's still the same.

Regards,
Günter

 

[Brad Combs]

Gunter,

I checked out an XP Pro build with Filemon and I saw what you are
experiencing every one minute as well. It appeared to be coming from the
Disk Quota service. I'm not even sure if this functions correctly on XPe,
but do you see any components in your image that would lead you to believe
it's in there? (Component: "Disk Quota User Interface")

There is also always the indexing service that can create junk reads/writes
to the disk. Make sure it's not running as well (Component: "Indexing
Service" and "Filter Mime Messages for the Indexing Service").

If you find any more info let me know and I'll try to help!

--
Brad Combs
Imago Technologies, LLC

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[Günter Wirth]

Brad,

The "Disk Quota User Interface" is part of my image.

I set the "Indexing Service" to disabled and "EnablePrefetcher" to 0 now,
but I still see the events:

explorer.exe IRP_MJ_CREATE
explorer.exe IRP_MJ_QUERY_VOLUME_INFORMATION
explorer.exe IRP_MJ_CLEANUP
explorer.exe IRP_MJ_CLOSE

The HD LED is sometimes on, so I think it still doesn't work.

Regards,
Günter

 

[KM]

Günter,

I guess Brad was saying that you need to disable the "Disk Quota User Interface" in your image.
The disk quota dll is loaded by Explorer and that likely queries the disk volume info on your system preventing turning off the disk
power. Try that if you haven't yet.

 

[Martin Grossen, eMVP [AVNET Silica]]

Hello Günter, hi Brad & KM

If the Disc Quota UI is integrated, the Quota service is enabled.
You can use the FSUTIL.EXE Tool to disable the Quota function.

The Tool is in the "NTFS Management Utility" component.
Use FSUTIL QUOTA DISABLE <discvolume>


--

Martin Grossen, eMVP

AVNET EMG Silica
FM/FAM Microsoft Embedded Europe

Your competent partner for Microsoft Embedded licencing

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Günter,

I guess Brad was saying that you need to disable the "Disk Quota User Interface" in your image.
The disk quota dll is loaded by Explorer and that likely queries the disk

volume info on your system preventing turning off the disk

 

[KM]

True.
Thanks for the info, Martin!