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Community Manager
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How to change from RAID0 to AHCI

Hello there. I have couple question. I tried google but was not successful.

I have Windows XP, BIOS set to RAID, 2 HDD, running Intel RST (Latest driver). and running fine.

Mobo is Gigabyte GA-EP35-DS3R (P35 / ICH9R)

I need to change 2 HDD RAID to 1 HDD AHCI mode.

I managed cloning 2 HDD RAID volume to 1 HDD, and Windows XP starts just fine under BIOS set to RAID.

But when I change BIOS to AHCI mode, I get 0x7B BSOD.

These are my question.

(1) How do I change Windows XP to RAID mode to AHCI mode?

(2) Any disadvantage if I keep using RAID mode in 1 HDD configuration?

Thank you!

Matthew K

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Community Manager
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Since no one answer to my questions, I googled more and tried to fix myself and I managed to fix 0x7b BSOD.

Here is what I did.

I basically followed his advice.

http://forums.pcper.com/showthread.php?t=444831 http://forums.pcper.com/showthread.php?t=444831

I had iaStor.sys in RAID mode, my registry was like this.

 

==== My original registry ====

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci# ven_8086&dev_2822&cc_0104]

 

"ClassGUID"="{4D36E97B-E325-11CE-BFC1-08002BE10318}"

 

"Service"="iaStor"

 

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]

 

"Type"=dword:00000001

 

"Start"=dword:00000000

 

"Group"="SCSI miniport"

 

"ErrorControl"=dword:00000001

 

"DisplayName"="Intel RAID Controller"

 

"ImagePath"=hex(2):73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,44,00,\

 

52,00,49,00,56,00,45,00,52,00,53,00,5c,00,69,00,61,00,53,00,74,00,6f,00,72,\

 

00,2e,00,73,00,79,00,73,00,00,00

 

"Tag"=dword:00000019

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]

 

"queuePriorityEnable"=dword:00000000

 

"BusType"=dword:00000008

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port0]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port1]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port2]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port3]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port4]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\Port5]

 

"AN"=dword:00000000

 

"LPM"=dword:00000000

 

"LPMSTATE"=dword:00000000

 

"LPMDSTATE"=dword:00000001

 

"GTF"=dword:00000000

 

"DIPM"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters\oromVersion]

 

"MajorVersion"=dword:00000007

 

"MinorVersion"=dword:00000005

 

"HotfixNumber"=dword:00000000

 

"BuildNumber"=dword:000003f9

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]

 

"0"="PCI\\VEN_8086&DEV_2822&SUBSYS_B0001458&REV_02\\3&13c0b0c5&0&FA"

 

"Count"=dword:00000001

 

"NextInstance"=dword:00000001

==== End of Registry ====

I deleted these registry and merged registry from website at above.

==== New registry ====

 

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"

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Community Manager
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I fixed myself. I commented what I did.

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