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Author Topic: HOW TO switch from IDE to AHCI mode without having to reinstall Win XP (GUIDE)  (Read 400624 times)

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Bannik

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Excuse my interruption, I have just purchased a new Motherboard with an NF650i Chipset, I have two SATA DVD-RW Drives and 2 SATAII Hard Drives, I've read that in order to make the SATA DVD-RW Drives work, I need to set the SATA controller to IDE mode...

Is this true? Or will the SATA DVD-RW Drives work in AHCI mode?

I haven't installed Windows yet and my biggest fear is that the DVD-RW Drives will become unavailable and screw up the Windows install, I know about the Hard Drives, press F6 during setup to install the driver etc, but what about these DVD-RW Drives?

Any and all answers are welcome, please help if you can, I've never used SATA before, everything has always been IDE.

Thanks.
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JackTopic starter

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This thread may not really be the right place to discuss this.  Anyway:

Quote
Is this true? Or will the SATA DVD-RW Drives work in AHCI mode

This is not true, at least not in generell.  I am using a SATA DVD-RW drive in AHCI mode on my 975X Plat. PUE-mainboard and did not have any problems.



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Bannik

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I am using a SATA DVD-RW drive in AHCI mode on my 975X Plat. PUE-mainboard and did not have any problems.

Did you install Windows OK with the SATA in that setting?
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JackTopic starter

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No, I never tried that with XP. However, it worked fine with vista.

Slipstream SATA drivers into a new XP-Install-CD using XP ISO BUILDER and try if it works.  I don'really know, why this should be a problem.
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Bannik

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Well, thanks for your assistance, I guess it will be trial and error.
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uid313

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Third Step:

Restart your computer, enter BIOS and switch to AHCI-mode.
Unfortunately, my MSI P35 Neo-F does not have any AHCI setting in the BIOS.  :angryfire:
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JackTopic starter

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Are you sure?  Have a look here in BIOS:

Integrated Peripherals --> On-Chip ATA Devices --> On-Chip SATA Controller --> ?? ??

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Bob the Fish

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I have the 975X Platinum PowerUp Edition bios 7.50 and have followed all steps listed. I get a BSOD when i turn on ACHI in the bios after adding reg file info and then puting iaStor.sys into the \Windows\System32\Drivers\ folder. could it be beucase of a new iaStor.sys from Intels matrix storage manager? i have the latest one from there web site. Not sure what rong any help would be cool.
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JackTopic starter

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What Windows Version are you using?
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Bob the Fish

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XP pro SP2 up to date as of today.
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uid313

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Are you sure?  Have a look here in BIOS:

Integrated Peripherals --> On-Chip ATA Devices --> On-Chip SATA Controller --> ?? ??


That is the one? I have that one...
I expected it would be an entry named "AHCI" something.
It can only be set to "IDE" and "Disabled", I think...
Confusing...
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mattyboy

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Can you use ACHI and a RAID 0 array at the same time. Like, have ACHI set in BIOS for a RAID array? Probably not right?
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will it work on Windows Vista too ? i have P965M Platinum with 320GB of Seagate 7200.10 HD.

I install both Vista & XP with dual booting.
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roguepenguin

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Bob the Fish-

I have the same setup - 975x PUE BIOS 7.5 (although I backed down to 7.4 and had the same issue). BSOD while following the procedure. The device ID used in the reg file in this thread does not match my machine, either. Is this the case with others?
entry from the reg file here:
ven_8086&dev_2821&cc_0106

entry for my SATA controller:
ven_8086&dev_27c1 <-- AHCI mode
ven_8086&dev_27c0 <-- IDE mode

even with the patched entry, it does not work. Upon reenabling IDE mode, I get a device listed in the registry at HKLM\SYSTEM\CurrentControlSet\Services\iaStor\Enum
0 = Root\LEGACY_IASTOR\0000

(The name of this key shows as "1" instead of "0" if you imported the whole registry file from here, which defines "0" already.)
Any ideas?

XP SP2
MSI 975X Platinum PowerUp Ed.
80GB Seagate 7200.10 drive

FOLLOW UP (SOLVED) -

I got angry and forced the regular SATA driver to be replaced by the AHCI Controller driver in the device manager, rebooted, turned it on, and now everything works.
Go figure.
-Chris



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Bob the Fish

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Bob the Fish-

I have the same setup - 975x PUE BIOS 7.5 (although I backed down to 7.4 and had the same issue). BSOD while following the procedure. The device ID used in the reg file in this thread does not match my machine, either. Is this the case with others?
entry from the reg file here:
ven_8086&dev_2821&cc_0106

entry for my SATA controller:
ven_8086&dev_27c1 <-- AHCI mode
ven_8086&dev_27c0 <-- IDE mode

even with the patched entry, it does not work. Upon reenabling IDE mode, I get a device listed in the registry at HKLM\SYSTEM\CurrentControlSet\Services\iaStor\Enum
0 = Root\LEGACY_IASTOR\0000

(The name of this key shows as "1" instead of "0" if you imported the whole registry file from here, which defines "0" already.)
Any ideas?

XP SP2
MSI 975X Platinum PowerUp Ed.
80GB Seagate 7200.10 drive

FOLLOW UP (SOLVED) -

I got angry and forced the regular SATA driver to be replaced by the AHCI Controller driver in the device manager, rebooted, turned it on, and now everything works.
Go figure.
-Chris


Witch of the listed drivers did you use i get 6 options.
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monographix

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for boards with ICH9R (worked on my P35 Neo2-FR)
« Reply #65 on: 12-December-07, 06:52:03 »

This tweak didnt work at first with my board. After some search seeing its coming from a ICH8 chipset i altered the device 2821 values in the reg code with the corresponding to ICH9R, 2922. Heres how it should look:



Quote from: ICH8
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2821&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_2821&SUBSYS_B0051458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001



Quote from: ICH9R
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2922&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_2922&SUBSYS_B0051458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001


Also The iaStor.sys ofcourse can be extracted from the latest matrix storage manager downloaded from Intel site (something like iata78_enu.exe). And its installation files that are being unpacked with the -a-a parameters are found in the Program files folder in the boot hard drive (eg C:\Program Files\Intel)


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JackTopic starter

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Thanks for your update.  :biggthumbsup:  :hat tip:
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monographix

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ur welcome  :)
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marcovtje

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I wasn't trying to disagree with you or your excellent guide. I just wanted to make people aware of the possible disadvantage of NCQ. Simply stated, for most desktop users NCQ is not worth enabling. Marketing is trying to make us believe otherwise...

In years long gone by I used SCSI drives on the desktop. Enabling NCQ on a good host adapter (and even cheaper ones like the later Symbios logic) provided a great boost for compiling.

The ultimate test I'd like to see is e.g. a Linux kernel compile.

(p.s. I'm reading this btw not for the XP side, but I hope that AHCI mode might kill some of the bios bugs of my (plain) P965-F :wall: :bonk:)
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Glando

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Thanks for your update.  :biggthumbsup:  :hat tip:
:worship: Thx for this thread Jack the Newbie and thx for the MSI Neo2 update monographix !! You saved me a lot of time !!

I've got a dual boot XP Pro/Vista Ultimate and it works the same way, except that you need to replace all "iaStor" occurences (without quotes ;-) by "iasStorV" for vista reg file ...

btw, I use AHCI for eSata "hot plug"...

HTH and... Thx again!!
 :biggthumbsup:

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nexusfr

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hi,

I did all the steps many time and always the same death screen.

my configuration:

-xp pro Sp2
-motheboard Msi platinium 975X powerup (ICH7DH) with the last update.
-I used IATA621_CD.EXE to extract iastor.sys (I did also a test with iata75_cd)
-for the reg file I used :

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2821&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_2821&SUBSYS_B0051458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001


and after hours nothing... :bon
someone can help me ?   :worship:
thanks


 
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JackTopic starter

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If the procedure I described in the first post of this thread does not work, you have to re-install Windows XP with AHCI mode enabled and integrate the drivers during setup.

https://forum-en.msi.com/index.php?topic=100940.0
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nexusfr

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Well thanks for your answer,  :)
but I am asking a question ; why some people (in this tread) having the same system like me (motheboard Msi platinium 975X powerup /Xp pro Sp2) the steps works ?  :shocking:

thanks again  :hat tip:
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JackTopic starter

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I don't know.  I worked on my system and I have the same board + OS.

Try the following content for your reg-file and see if that changes anything:

Quote
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_27C1&dev_2821&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_27C1&SUBSYS_72461462&REV_02\\3&2411E6FE&0&FS"
"Count"=dword:00000001
"NextInstance"=dword:00000001
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nexusfr

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Re-hi,

Forget my last question, now it's working fine  :agrees: ,
-I just changed the sata connection for the boot hardDisk (to the blue one under Msi platinium powerup).

when I reboot all is ok, nothing different, intel Matrix storage works :) .

-strange thing, the boot hard drive in materiel propreties it's writing "Sata maxtor 7 scsi disk device"
 but this hard disk is not "scsi"..?

anyway thanks again  :yes:


 
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JackTopic starter

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Quote
I just changed the sata connection for the boot hardDisk (to the blue one under Msi platinium powerup).

You mean the connector that stands a little seperated from the other four? That port is hosted by the JMicron Controller, not by Intel ICH7DH...

That also explains why it is listed as a SCSI Device:

http://www.jmicron.com/Driver.htm

Click on "FAQ" and you will find this info:

Quote
JMB driver base on Windows SCSI mini port driver architecture , if any device attach on JMB controller will be an SCSI device.

So after all, what you did there may have worked, but it has nothing to do with the procedure.

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nexusfr

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yes this connector  :shocked:

I really dont know why this procedure dont work with me, I did all the steps many time,   lot of people having this Mb and it works good
:wall:

-my xppro is up to date and very stable.

is there any other solutions ?
tnks
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JackTopic starter

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Quote
is there any other solutions ?

Actually, re-installing Windows with AHCI mode enabled in BIOS IS the standard procedure.  The steps decribed here are meant to provide an alternative that works in many (but unfortunately not in all) cases.  There is not much you can do but to reinstall XP and integrate the ICH7DH AHCI drivers during Setup. 

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wonderwrench

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Just for fun I tried to switch from IDE to AHCI mode using this method on the rig in my sig (P35 chipset).
I followed the guide to the letter but blue screen anyway. Has anyone successfully used this method on a
P35 chipset?
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Just for fun I tried to switch from IDE to AHCI mode using this method on the rig in my sig (P35 chipset).
I followed the guide to the letter but blue screen anyway. Has anyone successfully used this method on a
P35 chipset?

Yes and P965, I wish hadn't on the P35 though :wall: Hard disk is slower now........

Yes is NCQ hard drive..... win some and lose some

On P965, it's great...........

Will be doing a re-install on P35 and see if F6 option is any better.....
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I wonder why I can't get it to work. The guide is so simple and easy to follow. Copy reg text to text file, change .txt extension to .reg, double click reg file, say yes to prompt. Copy iastor.sys to windows\system32\drivers folder. Reboot change to AHCI mode, save and exit bios, blue screen!
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JackTopic starter

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Hello wonderwrench,

which content did you use for your reg-file?

Have you tried the code provided my monographix?

https://forum-en.msi.com/index.php?topic=106575.msg844741#msg844741
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wonderwrench

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Hello wonderwrench,

which content did you use for your reg-file?

Have you tried the code provided my monographix?

https://forum-en.msi.com/index.php?topic=106575.msg844741#msg844741

That did it! Using the correct reg-file worked. Things work better when you pay attention to what you are doing.
Could the original post be updated so the different reg-files for the different chipsets easily accessible? Giving monographix credit of course.

Some quick testing shows no performance gain by enabling AHCI mode. I did not think it would. Just wanted to see the outcome.
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Quote
That did it!

 :biggthumbsup:

Quote
Could the original post be updated so the different reg-files for the different chipsets easily accessible? Giving monographix credit of course.

Not a bad idea actually.  Maybe I get to it on the weekend.
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belkin

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Hello,

Is there a guide for Windows Vista SP1?




MSI P35 Platinum edition Core Due 2 Extreme
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vernonion

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Yes, Vista nativly supports AHCI and does not require any additional drivers. Simply change one registry switch then go into bios and turn on AHCI mode. Vista only enables AHCI on Install if the hardware requires it.
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mike1555

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Thanks  Jack the Newbie ,this tutorial solved one (major) problem in 3 minutes ! Great !
Mike
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fraggle

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It works great for me and my P35 Neo2-FR. Very good guide.

THX Jack :hat tip:
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sashabe

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Thanks! Worked beatifully on Asus P5B-E.
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Phatkat

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Hi i am using an AMD 780G mobo - how can i switch to AHCI mode? Thanks in advance to any help rendered  :agrees:
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Del UK

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Hi i am using an AMD 780G mobo - how can i switch to AHCI mode? Thanks in advance to any help rendered  :agrees:

Hi,

You will probably be better off, asking in the AMD part of the forum....... :yes:

https://forum-en.msi.com/index.php?board=24.0  <--------Link to AMD Forum
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Sukhoi

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sorry if you has answered that problem a lot of times yet, but its difficult to me understand that (and the English too  :-P) ).

I have the MSI P35 neo2-FR (ich9r) / e4400 / Win XP SP3. You can say me if the steps which I do are ok?

1- Make the .reg file as the first post explain.

2- Download last version of Intel Matrix Storage from http://downloadcenter.intel.com/Detail_Desc.aspx?agr=N&ProductID=2101&DwnldID=16012&strOSs=&OSFullName=&lang=spa . It download the file iata82_cd.exe but when I have to install it? now?

If I do it:
3- I suposse it crate the folder \Program Files\Intel\Intel Matrix Storage Manager\Driver . Then I can find the file iaStor.sys there, and I have to copy it to "Windows\System32\Drivers"

4- Reboot and select in bios AHCI mode.

Those are ok? I have to change anything y the reg file?

thankyou so much
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Del UK

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Open Notepad.

Highlight and copy the text below.

For ICH9
Quote
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2922&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_2922&SUBSYS_B0051458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001

Now, save as achi.reg

You have to register the files with the operating system, because you are changing the way the disks are read & written to.

If you follow the instructions on page one of this thread, it will take about 15 minutes to complete.
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JackTopic starter

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Quote

2- Download last version of Intel Matrix Storage from http://downloadcenter.intel.com/Detail_Desc.aspx?agr=N&ProductID=2101&DwnldID=16012&strOSs=&OSFullName=&lang=spa . It download the file iata82_cd.exe but when I have to install it? now?

If I do it:
3- I suposse it crate the folder \Program Files\Intel\Intel Matrix Storage Manager\Driver . Then I can find the file iaStor.sys there, and I have to copy it to "Windows\System32\Drivers"

You cannot simply execute iata82_cd.exe.  If you do that, it will give you an error message saying that your hardware is not supported (AHCI or RAID mode need to be enabled for the Intel Matrix Storage Manager to be able to be installed). What you have to do before you restart your system and switch to AHCI mode is to extract the actual driver files.  I explained that in my first post as well:


Quote
Second Step:

Copy the iaStor.sys-File into the \Windows\System32\Drivers\-Folder if it isn't in there already. 

The file is part of the of the Intel Matrix Storage Manager-Packet (IATA621_CD.EXE) and can be retrieved manually:

\START\Run --> IATA621_CD.EXE -a -a [or in your case: iata82_cd.exe -a -a ]

After entering this command the file should be in the following folder:

...\Program Files\Intel\Intel Matrix Storage Manager\Driver

...and ready to be copied.
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Sukhoi

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yessss.. finally I could!. But following anothers steps: I get the "iaStor.sys" file from another forum and copied it to windows/...../drivers. Then I ran the reg file. Reboot and install iata82_cd.exe..

It worked good, my time boot is much faster than before:

IDE Mode:


AHCI Mode:



Although the boot is quickly, it lose several seconds before the windows screen appear, just waiting something with a "dash" in the up left corner of the screen.
Cheking BIOS I found that option:


what's the meaning of "AHCI CD/DVD boot time out"? Does this relate to what I said above?

Thankyou, that forum is really good
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Del UK

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yessss.. finally I could!. But following anothers steps: I get the "iaStor.sys" file from another forum and copied it to windows/...../drivers. Then I ran the reg file. Reboot and install iata82_cd.exe..

It worked good, my time boot is much faster than before:

IDE Mode:


AHCI Mode:



Although the boot is quickly, it lose several seconds before the windows screen appear, just waiting something with a "dash" in the up left corner of the screen.
Cheking BIOS I found that option:


what's the meaning of "AHCI CD/DVD boot time out"? Does this relate to what I said above?

Thankyou, that forum is really good


That's great news.

Leave the CD/DVD timeout........ :biggthumbsup:

The delay, is just the drivers loading for multi - read/write. Nothing to be worried about.
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Killer344

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Well, first, thanks jack, you showed me the path O.O , and second, here´s the reg file needed for the ich10r (the driver is also included).

http://rapidshare.com/files/132943510/Ahci_on_Xp.rar.html


I´ve just tested and it works fine.


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bohdank

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What would be the process for enabling RAID ? I want to, eventually, run RAID 1 on a second and third drive.
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OldMSguy

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Has anyone successfully accomplished the switch for the P45 and ICH10R?

I just built a system with the P45 Neo 3 (MS-7514)

Getting the hot swap capability would make working with my data archive hard drives a lot easier.

Any help with the registry tweaks would be greatly appreciated
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JackTopic starter

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Hello OldMSguy,

the procedure is basically the same as for the other Intel Chipsets (see my first post).  The only difference should be a small variation within the reg-file you have to create. Unfortunately, I do not have the content for ICH10, but for ICH10R only.  I will provide you with the link to a ready-made reg-file that you can try. It may work for ICH10 as well, but I have no way to test it yet, as I do not have an ICH10-Board here:

Direct link to REG-File:  http://www.jzelectronic.de/jz2/Download2/ICH10R-AHCI.reg
Original Context: http://62.109.81.232/cgi-bin/sbb/sbb.cgi?&a=show&forum=1&show=7578&start=0#1
THX @ JZ

Content:

Quote
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A22&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000
"BusType"=dword:00000003

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port0]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port1]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port2]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port3]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port4]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port5]
"AN"=dword:00000000
"LPM"=dword:00000001
"LPMSTATE"=dword:00000000
"LPMDSTATE"=dword:00000001
"GTF"=dword:00000000
"DIPM"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_3A22&SUBSYS_B0051458&REV_01\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001

If that does not work for ICH10 please say so.  Maybe we only have to change the vendor ID slightly.
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