Forum - Specific: Intel AHCI/RAID Drivers » Switching from AHCI to RAID mode

Win-Raid Forum (Drivers - Firmware - Modding) � Important Drivers (AHCI/RAID, NVMe, USB etc.) � Specific: Intel AHCI/RAID Drivers � Switching from AHCI to RAID mode

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#1 | Switching from AHCI to RAID mode datum

Mon Mar 09, 2015 7:07 pm

I just bought some WD blue 1TB drives that I want to use in a RAID0 for a video recording drive but my OS is already installed in AHCI mode. I know i have to change something in the registry to enable RAID mode so i dont get a BSOD. I just don't remember the location of the registry key or what to change. I would appreciate the help! I currently have modded my bios with the v13.1.0.2126 RAID ROM. I am running the v13.1.0.1058 AHCI driver.

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#2 | RE: Switching from AHCI to RAID mode datum

Mon Mar 09, 2015 10:11 pm

@ johns36j:

I generally do not recommend to switch the SATA mode from within a running OS. It is much better and safer, if you make a backup of your most important data and then do a fresh OS install in RAID mode.

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#3 | RE: Switching from AHCI to RAID mode datum

Mon Mar 09, 2015 11:14 pm

@Fernando:

What if i am not putting the OS on a raid array?...it will remain on a single ssd but i really want to just add a raid 0 to my existing setup!

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#4 | RE: Switching from AHCI to RAID mode datum

Mon Mar 09, 2015 11:43 pm (Last edited: Mon Mar 09, 2015 11:45 pm)

Zitat von johns36j im Beitrag #3
What if i am not putting the OS on a raid array?

Your single SSD will nevertheless run in RAID mode and will require a RAID driver instead of an AHCI one.
All drives, which are connected to any Intel SATA port, need a RAID driver, when you have set the Intel SATA Controller to "RAID" within the BIOS. It doesn't matter, whether the drive is member of a RAID array or not.

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#5 | RE: Switching from AHCI to RAID mode datum

Tue Mar 10, 2015 12:01 am

Zitat von Fernando im Beitrag #4
Your single SSD will nevertheless run in RAID mode and will require a RAID driver instead of an AHCI one.

Is there a way i can install that driver after switching modes? like forcing the windows to boot into safe mode?

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#6 | RE: Switching from AHCI to RAID mode datum

Tue Mar 10, 2015 12:32 am

Zitat von johns36j im Beitrag #5
Is there a way i can install that driver after switching modes?

No, the problem is, that you will not even be able to boot into Windows after the switch from "AHCI" to "RAID" mode.
What you can try is to force the installation of the RAID driver by choosing the file named iaStorAC.inf before you enter the BIOS and switch the SATA mode of the Intel SATA Controller.

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Install of Windows XP in AHCI mode onto an Intel 8-Series Chipset system � � Samsung SSD Rapid Mode

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