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Thread: P55A-UD4P XP and AHCI

  1. #1
    Join Date
    Jan 2010

    Default P55A-UD4P XP and AHCI

    I installed XP using F6 method for all 3 controllers RAID/AHCI. Intel controller bios was set to IDE, Native mode. Install went OK

    HD is SATA II

    I then changed Intel controller bios to AHCI and during boot received the BSOD.

    What am I doing wrong

    Model Name : GA-P55A-UD4P(rev. 1.0)
    M/B Rev : 1.0
    BIOS Ver : 7c
    Serial No. :
    Purchase Dealer :
    VGA Brand : HIS Model : HD4670
    CPU Brand : Intel Model : i7-860 Speed : 2.8ghz
    Operation System : SP :
    Memory Brand : skill Type : DDRII
    Memory Size : 8gb Speed : 1333
    Power Supply : 620 W

  2. #2
    Join Date
    Oct 2009

    Default Re: P55A-UD4P XP and AHCI

    when you change your bios setting Intel controller bios from IDE to AHCI or Raid, you need to re-install OS. the OS can not be shared with different mode (IDE or AHCI).

  3. #3
    flyfisher is offline Member
    Join Date
    Dec 2008
    South Central PA

    Default Re: P55A-UD4P XP and AHCI

    Yes you must have the IDE/AHCI/RAID mode set before you install. F6 loads drivers need for install, but if they are not needed (no AHCI detected because it's set to IDE) then they do not get installed. Set the mode to AHCI and install the drivers by F6 when prompted.

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