0 Replies Latest reply on Feb 10, 2011 12:22 AM by platypus

    Recovering from incorrectly setting BIOS to AHCI from RAID/IDE on ICH9R system


      I have done something wrong and hopefully can correct the situation. Any advice would be GREATLY appeciated.


      I  have a Gigabyte EP35-DS3P (F6A) motherboard which has an ICH9R controller.


      The following disk drives are attached to the motherboard:


      Onboard SATA/IDE

      - Seagate ST3750640AS 750GB HDD (IDE Mode)



      - Maxtor STM3100034AS 1 TB HDD

      - Maxtor STM3100034AS 1 TB HDD

      - Maxtor STM3100034AS 1 TB HDD

      - Maxtor STM3100034AS 1 TB HDD

      - Maxtor STM3100034AS 1 TB HDD

      - Maxtor STM3100034AS 1 TB HDD


      5 of these Maxtor HDDs are configured for RAID 5. The remaining drive is a standalone drive (Port 04). Everything is fine.


      Windows 7 x64 has been installed on the Seagate drive. Intel Rapid Storage Technology Manager is installed. Everything is fine.


      So I bought a new A-RAM ARSSD56GBP 256GB SSD which I installed on the SATA/IDE onboard controller. Plan is to boot and run Windows 7 x64 off the SSD.


      So I install the A-RAM. Now I need to change the BIOS so that it runs using AHCI mode.


      Because I am not paying attention I incorrectly configure the BIOS so that the SATA RAID/AHCI Mode runs in AHCI mode (instead of RAID/IDE). I should have configured the Onboard SATA/IDE Device to be AHCI (instead of of IDE).


      I reboot the computer.


      Everything is not fine.


      Obviously the Intel(R) Matrix Storage Manager is telling me that the 5 Maxtor HDDs are now running in AHCI mode, not RAID.


      I notice this as the computer is booting and shutdown the computer. (Windows 7 might have started to boot, but we never booted into it.)


      I change the BIOS setting back so that the SATA RAID/AHCI Mode is back to RAID mode and reboot the computer.


      Everything is definitely not fine.


      So I am getting the following:


      Serial ATA AHCI BIOS, Version iSrc 1.07 08042006

      Copyright ...



      Controller Bus#00, Device#1F, Function#02: 06 Ports, 06 Devices

          Port-00: Hard Disk, MAXTOR STM31000340AS

                          (Drive is controlled by the RAID BIOS)

      ... -- Same for the remaining 5 drives

      AHCI BIOS not installed


      Intel(R) Matrix Storage Manager option ROM v7.5.0.1017 ICH9R wRAID5



      RAID Volumes:





      Physical Drives

      PortDrive ModelSerial #SizeType/Status(Vol ID)
      0MAXTOR STM310003...931.5GBNon-RAID Disk
      1MAXTOR STM310003...931.5GBNon-RAID Disk
      2MAXTOR STM310003...931.5GBNon-RAID Disk
      3MAXTOR STM310003...931.5GBNon-RAID Disk
      4MAXTOR STM310003...931.5GBNon-RAID Disk
      5MAXTOR STM310003...931.5GBMember Disk(0)



      So I know I should not have done what I did.


      But I am surprised that when I changed the settings back to what they were it has come up with the RAID 5 array Failed and only one member disk. Surely the "signatures" on the disks, etc (or whatever is being used) should be fine. I have not booted into Windows yet.


      I would have thought that the worst case would have been for the RAID 5 array to come back as Degraded.


      Can anyone suggest a course of action as to what to do to ensure that I have my RAID 5 array back?


      Or, failing that, how to salvage it? I only had about 20-50 GB worth of large files there.


      The data and parity should be fine, I expect the "signatures" or whatever are wrong.


      Can I try doing something like this:


      1. Drop last HDD that's still a member from the RAID5 array.

      2. Either add all 5 orginal drives back to RAID5 array, or if that fails create a new RAID 5 array and add the same drive back (in same order)

      3. Once I have added those 5 drives turn off the computer. The theory is that we have bound those 5 drives into the RAID5 array

      4. Theory is upon reboot the drives are in the RAID5 array, but it is degraded.

      5. Run the rebuild process.


      Many thanks in advance,