Windows 10: I reset BIOS SATA setting to ACHI and now can't return to RAID Solved

  1.    20 Jan 2018 #1

    I reset BIOS SATA setting to ACHI and now can't return to RAID


    I somehow reset my BIOS when inserting a new graphics card. My system drive is an SDD whilst I also have two HDDs connected to the motherboard which are supposed to be in RAID 0. I reconfigured my BIOS the best I could from memory and when I loaded Windows, my RAID was missing. I found a setting in the BIOS called the SATA configuration which is selectable between AHCI (default) and RAID. I presume that it was set to RAID previously in order for the HDDs to be in RAID 0 configuration so I set the SATA configuration to RAID. After doing this, Windows would no longer boot. I recall Windows having a hangup about this setting and it occurs to me that maybe Windows is okay if the setting changes from RAID to AHCI but changes itself when it detects this change and then refuses to go in the opposite direction after the setting is changed back. Does anyone know if this might be the case?
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  2. Posts : 35,316
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       20 Jan 2018 #2

    THX1138 said: View Post
    I somehow reset my BIOS when inserting a new graphics card. My system drive is an SDD whilst I also have two HDDs connected to the motherboard which are supposed to be in RAID 0. I reconfigured my BIOS the best I could from memory and when I loaded Windows, my RAID was missing. I found a setting in the BIOS called the SATA configuration which is selectable between AHCI (default) and RAID. I presume that it was set to RAID previously in order for the HDDs to be in RAID 0 configuration so I set the SATA configuration to RAID. After doing this, Windows would no longer boot. I recall Windows having a hangup about this setting and it occurs to me that maybe Windows is okay if the setting changes from RAID to AHCI but changes itself when it detects this change and then refuses to go in the opposite direction after the setting is changed back. Does anyone know if this might be the case?
    Not familiar with your MB, but you should have an option in BIOS to reset to factory defaults. On the odd chance you do not, popping the CMOS battery and reinserting will also reset. Copy down all the current settings first, so at least you have a return point. Only thing I can think of now.
      My ComputersSystem Spec

  3.    20 Jan 2018 #3

    f14tomcat said: View Post
    Not familiar with your MB, but you should have an option in BIOS to reset to factory defaults. On the odd chance you do not, popping the CMOS battery and reinserting will also reset. Copy down all the current settings first, so at least you have a return point. Only thing I can think of now.
    Thanks but unfortunately, resetting the BIOS is how I got into this situation so I don't see how it could help. Resetting the BIOS will change the SATA setting to AHCI but I've already done that so I can type this message. It won't get me any closer to recovering my RAID 0!
      My ComputerSystem Spec

  4.    20 Jan 2018 #4

    I haven't found any definitive statement saying that Windows can't handle RAID->AHCI->RAID. I tried this on my system and get the INACCESSIBLE_BOOT_DEVICE error when going from RAID->AHCI and from AHCI->RAID.

    However, in both cases booting to safe mode and then rebooting back into normal mode fixes the issue.
      My ComputerSystem Spec

  5.    21 Jan 2018 #5

    Windows 10 is pretty forgiving if you go through Safe Mode as 'Nettles said

    If you already installed under RAID, you can change to AHCI with Win 10. ( and visa versa)


    1. In Win 10, do a safemode boot by going to run (Win Key+R) => type msconfig.exe and choose => boot => safe boot.
    2. On the reboot, hit F2 or Delete and go into Bios ( before Safe Mode ) and change to AHCI/RAID as needed.
    3. Then boot into Safemode and let Win10 load the default MS drivers automatically.
    4. Open msconfig as as above change back to normal boot, then reboot.
    5. Win10 will once again load the AHCI/RAID Drivers as needed automatically ( may need a reboot
    6. Then install the Intel RST Driver or Samsung NVMe driver if needed.
      My ComputerSystem Spec

  6.    21 Jan 2018 #6

    Thanks, guys; restarting in safemode and switching the setting during the reboot (and then rebooting back into normal mode) fixed it! My life has improved 7%! <3
      My ComputerSystem Spec

  7.    21 Jan 2018 #7

    only 7% ? :) rough week ?

    thanks for reporting back ....

    KB.
      My ComputerSystem Spec


 

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