> Hello Anybody!
>
> If you have installed Windows Vista, with the On Chip SATA Controller
> operating in Native IDE mode (default) in bios, and you decide to change
> to AHCI mode, it's not possible to add the driver. The driver should
> have been added with the option: add storage drivers, during the first
> part of the installation. Changing the BIOS setting to operate in AHCI
> mode simply will give a BSOD when you boot the system again.
>
>
> I have found a way to accomplish the change to AHCI mode, [b]after[/b]
> the system has been installed:
>
> 1: Change the a registry key, following the guide here:
>
>
http://support.microsoft.com/kb/922976>
> This is a copy and past of the text:
>
> Locate and then click the following registry subkey:
>
> HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
> In the right pane, right-click Start in the Name column, and then click
> Modify.
> In the Value data box, type 0, and then click OK.
> On the File menu, click Exit to close Registry Editor.
>
> After having modified the Registry key, you can go on with the
> installation of the driver:
>
> 2: Open Device Manager, and scroll down to, and highlight storage
> controller.
>
> Click the Action button, on the Top and select Add New Hardware (on my
> Danish version of Vista, it's called something like "Add Older Hardware"
>
> When the Guide starts, choose to manually install the HW. You will be
> presented with the option: Show all types.
> Scroll to, and highlight the Storage Controller, click next. In the next
> window, you will have several devices to choose from. Scroll down to
> Microsoft, and in the right panel choose "Microsoft iSCSI-initiator" and
> the installation of the driver takes place.
>
> This is the weird thing that makes it possible to add the AHCI drivers.
> You now have two instances of "Microsoft iSCSI-initiator" in device
> manager.
>
> 3: The operation is to highlight the newly added "Microsoft
> iSCSI-initiator", and click "Update Driver Software"
> Choose to manually add the driver instead of automatically search for
> updated driver, and click next. Now add your "F6 drivers"
>
> Reboot, and change the BIOS setting to AHCI.
>
> The Short story:
>
> 1.Change registry key
> 2.Add new HW (2 pieces of the same "Microsoft iSCSI-initiator" driver)
> 3.Update the newly added "Microsoft iSCSI-initiator" to "AMD Compatible
> Raid Controller"
> 4.Reboot and make the changes in BIOS to configure the SATA controller
> to operate in AHCI mode.
> 5. Start your system without getting the BSOD
>
> I know this is a poor explanation, but I hope someone can use it.
>
> Kind Regards
> LDJ
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