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Thread: ESATA, hot-swapping and the EP45-UD3P




  1. #1
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    Default ESATA, hot-swapping and the EP45-UD3P

    so right now my external drive (using a Antec MX-1 external enclosure) is only recognized when I start my computer with the external already on. I suppose this is because my BIOS is set to SATA "legacy" mode.

    Do I have to have AHCI enabled to have ESATA hot swapping?


    I tried downloading the Intel SATA RAID/AHCI driver from the gigabyte website (version 8.9.0.1023) but it says:

    ESATA, hot-swapping and the EP45-UD3P-error-png


    Should I enable AHCI before installing the driver?
    EP45-UD3P rev 1.6 BIOS FE || Q9550 E0 at 3200MHz (8x400) 1.15V || 2x2GB Corsair XMS2 DDR2800

  2. #2
    Acebmxer's Avatar
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    yes I believe you need AHCI for hot swapping or external drives.

    Yes you need to have AHCI enabled before you can install the driver. You have to make a registry change before you can enable AHCI as you will get a BSOD.

    Enable switching between all IDE/AHCI/RAID modes by changing "Start" Values in these keys to 0

    Code:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci\Start
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Pciide\Start  
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\iaStorV\Start
    make these changes in the registry then reboot into bios set to ahci then you will be able to install the drivers.
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  3. #3
    Lsdmeasap's Avatar
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    The eSATA ports are from J.Micron, you will need to install the J.Micron drivers for AHCI from your motherboards webpage and enable AHCI for eSATA/GSATA in the BIOS.

  4. #4
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    thanks Acebmxer

    wasn't quite sure on how to modify the registry values but a quick google search and I was OK.

    Problem though, I still don't see my external drive when I turn it on when the computer is already running. It used to work before and I'm pretty sure that I never used AHCI before. It was with the same Antec enclosure but a different drive (Seagate 1.5TB) and my current drive is a Samsung F4 2TB (formatted with Win 7, default settings I believe). Could my drive choice have something to do with it not being recognized unless it is started before hand?


    Lsd, are you referring to ports 7 & 8, the Gigabyte SATA2 chip? My motherboard didn't come with an ESATA on the backplate. I'm using an extension SATA connector to the back (I believe it came with the motherboard) using one the 6 Intel SATA ports. This was the same setup with the previous drive (which somehow worked in IDE mode, being recognized after startup that is)


    and I now see that I'm always between 30~50% on CPU usage in the task manager. It was always between 0~5% when in IDE mode...
    Last edited by edplayer; 01-02-2011 at 02:37 PM.
    EP45-UD3P rev 1.6 BIOS FE || Q9550 E0 at 3200MHz (8x400) 1.15V || 2x2GB Corsair XMS2 DDR2800

  5. #5
    Lsdmeasap's Avatar
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    Ohh ok, sorry man, ya I was thinking you were using the Gigabyte ports or a backplane port.

    You could try and see if enable/disable Legacy USB Storage Detect matters any one way or the other, it shouldn't but it might.

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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    This table is from ICH10 datasheet and you can see that many things don't work in legacy mode, including hot plug.
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    I only mentioned the legacy USB setting, nothing to do with disks.

    And I really just mentioned it as a possible thing that might it, it probably wont.

    The only time I see removable disks is on the J/Micron or Marvell ports on newer boards, never on Intel ports

  8. #8
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    Default Re: ESATA, hot-swapping and the EP45-UD3P

    I was talking about running ICH10 in IDE i.e. legacy mode as some bioses call it.
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