Windows 8 and 8.1 Forums


Converting IDE to AHCI on SSD Drive - Windows 8 Build 8400

  1. #1


    Posts : 1
    Windows 8 Build 8400

    Converting IDE to AHCI on SSD Drive - Windows 8 Build 8400


    Hi Everyone

    My first post and I require some assistance. I have just installed build 8400 of Windows 8 on a brand new AData 510 Series Sata 3 128GB Drive.

    I had hassles from the install where it would not detect the SSD until I set the BIOS to read the SATA III ports as IDE and not AHCI.

    Upon changing, it detected and installed.

    HOWEVER: when I alter the BIOS back to AHCI it crashed Windows 8. Upon googling I was directed to this forum where I found a post advising to delete two keys from the registry.

    I did this - but it still crashes every single time.

    Please can you assist me

      My System SpecsSystem Spec

  2. #2


    Portsmouth Hants
    Posts : 772
    Windows 8.1 Pro with Media Center


    You may need to wait until the SATA drivers become available for Windows 8 - have you checked the GIGABYTE site?

    GIGABYTE - Support & Downloads - Downloads
      My System SpecsSystem Spec

  3. #3


    Posts : 6
    Windows 8


    I'm in this same boat. Yes, aware of the regedit fix. However, it doesn't seem to work. For one thing, I don't have an Msahci key in my registry. For another, changing the iaStorV key as Microsoft suggests doesn't seem to work. But the start value for my Pciide key already is zero. For a third thing, the MS fixit thingy doesn't run on Windows 8. any thoughts as to what's going on?
      My System SpecsSystem Spec

  4. #4


    Posts : 17
    Windows 8 Pro


    There is a lot of misinformation on the internet on how to convert Windows 8 from IDE to AHCI.
    I have followed a lot of bad leads. But I can say that I know how to do it without any problem at all.

    Of course, the first thing that you need is AHCI Windows 8 support from your motherboard manufacturer. So go to your motherboard manufacturer and find SATA Preinstall Drivers for your motherboard. In that package, you will have a .sys file. So that is the important file for your computer. Now right click on the .inf file that corresponds to that .sys file and click "Install".

    Now got to:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[the name of the .sys file]\StartOverride

    Change the 0 DWORD value from 3 to 0.

    Reboot, and change your SATA controller to AHCI.
    You will boot into Windows with AHCI drivers.
      My System SpecsSystem Spec

  5. #5


    Posts : 1,121
    Windows 8.1 x64


    Even though you may be able to change the IDE to AHCI, from what I have read, it may not be a good idea, especially with an SSD.

    Even ASUS, recommends a new install using the AHCI controller. Was the drive recognized in Windows 7?

    Edit: You might check for a firmware update for the drive. If you look, it might mention what the update is for and possibly your issue is involved. To check what version you have now, open the Device Manager, select your SSD and right click for properties.

    Look in the Details tab and select Hardware IDs as a property to check. Your firmware version should be on several of the lines on the right end.
    Last edited by Saltgrass; 30 Aug 2012 at 09:37.
      My System SpecsSystem Spec

  6. #6


    Posts : 6
    Windows 8


    In my case, I was missing several registry keys that were required for the switch. But once I added them, the switch was painless.
      My System SpecsSystem Spec

  7. #7


    Posts : 2
    win 8


    Quote Originally Posted by Velcroman View Post
    In my case, I was missing several registry keys that were required for the switch. But once I added them, the switch was painless.
    u might wanne tell wich keys u added?
    cause i'm having the same problem on windows 8
      My System SpecsSystem Spec

  8. #8


    Quote Originally Posted by Stigg View Post
    There is a lot of misinformation on the internet on how to convert Windows 8 from IDE to AHCI.
    I have followed a lot of bad leads. But I can say that I know how to do it without any problem at all.

    Now got to:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[the name of the .sys file]\StartOverride

    Change the 0 DWORD value from 3 to 0.

    Reboot, and change your SATA controller to AHCI.
    You will boot into Windows with AHCI drivers.
    I am glad that you have told me how to do this, as I have also followed many false leads.

    I have an ASUS motherboard and I changed the key for the storahci.sys driver. Oddly, after rebooting with AHCI the StartOverride key has vanished from the registry.
      My System SpecsSystem Spec

  9. #9


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    For next time, you can load your Sata controller in setup.
    SATA Driver - Load in Windows 8 Setup

    No need to set BIOS to IDE mode.
      My System SpecsSystem Spec

Converting IDE to AHCI on SSD Drive - Windows 8 Build 8400
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