Originally Posted by gLk*zaP 
If you have installed Windows when your mainboard SATA controller was set to native IDE mode,
you usually cannot switch later to AHCI or RAID mode, without completly reinstalling windows.
But there is a way...
Here's the update for Intel ICH10 on Windows XP to enable BOTH AHCI & RAID at the same time. So if you installed Windows XP in IDE mode (without AHCI or RAID) or you installed Windows in AHCI mode and would like to switch to RAID (or from RAID to AHCI) here's what to do :
- Download the storage manager 32 bits floppy zip file and "RAID/AHCI Software - Intel® Matrix Storage Manager" on Intel website. (Sorry 1st post, can't post URL)
- Extract iaStor.sys to "C:\WINDOWS\system32\drivers"
- Create a file named iastor-ahci+raid.reg and copy this content into it :
Code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3a22&cc_0106]
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"
"Service"="iaStor"
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\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
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI+RAID 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: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\Enum]
"0"="PCI\\VEN_8086&DEV_3A22&SUBSYS_B0051458&REV_00\\3&13c0b0c5&0&FA"
"1"="PCI\\VEN_8086&DEV_2822&SUBSYS_B0001458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000002
"NextInstance"=dword:00000002
- Merge the registry file iastor-ahci+raid.reg
- Reboot and change the mode to IDE, AHCI or RAID in the BIOS. If you were using a RAID to boot make sure that you know what you do before rebooting, taking apart a RAID will likely break your windows installation.
- When you're back in Windows, install the "RAID/AHCI Software - Intel® Matrix Storage Manager" to finish the process.
Please note that I haven't tested this on any other hardware than my GA-EP45-DS4P motherboard from Gigabyte, but any P45 + ICH10 motherboard should work, as usual make a backup of your data before trying this!!! Changing the registry (particurarily the part that is responsible for the drivers required to boot) can lead to an unbootable OS, you've been warned!
Before you do this if you are booting in AHCI or RAID mode you should have one of the following registry key :
Code:
------------------------AHCI------------------------
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3a22&cc_0106]
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"
"Service"="iaStor"
------------------------RAID------------------------
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2822&cc_0104]
"ClassGUID"="{4D36E97B-E325-11CE-BFC1-08002BE10318}"
"Service"="iaStor"
If you don't have one of those keys and you're using AHCI or RAID you don't have the same ICH10 chip as me and should try to replicate my changes with the right ClassGUID and PCI Ids.
Good Luck!