Windows 8 and 8.1 Forums


Dual boot win 7 and 8: Is AHCI necessary?

  1. #11


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    I'm not running RAID arrays on my systems.
    If you are running RAID you can hot swap hard drives, RAID by default enables AHCI and provides all the benefits of AHCI .

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  2. #12


    Posts : 2,156
    Win7 Ult on DIY; Win8 Pro on MBP/Parallels; Win7 Ult on MBP/Boot Camp; Win7 Ult/Win8 Pro on HP


    Thanks much for the clarification.
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  3. #13


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    You're welcome.
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  4. #14


    Posts : 41
    Windows 7 x64 Home and 8.1 x64 Enterprise


    Quote Originally Posted by Dave76 View Post

    If I understand your situation correctly, you're not using or planning on using a RAID array, you want to be able to hot swap your external hard drive. Just leave your BIOS setting to RAID, I've run several systems that way.
    yep. However, whenever I hot-swap my external HDD, the only my computer can detect it is when I go into Device Manager and press Scan for hardware changes. ​Is that normal?
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  5. #15


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    If you're using eSATA, it should be detected when you plug it in. Do you get the notification on what you want to do with it?
    Does it show up in the 'Safely remove Hardware' in the taskbar?
    Check your BIOS settings, OEMs like Acer usually don't have many options, take a look for something that may help.
    Have you checked with Acer support for a BIOS update?
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  6. #16


    Posts : 41
    Windows 7 x64 Home and 8.1 x64 Enterprise


    If you're using eSATA, it should be detected when you plug it in. Do you get the notification on what you want to do with it?
    Only if I scan for hardware changes in device manager
    Does it show up in the 'Safely remove Hardware' in the taskbar?
    no

    Check your BIOS settings, OEMs like Acer usually don't have many options, take a look for something that may help.
    Have you checked with Acer support for a BIOS update?
    AFAIK, there's nothing in the bios that looks like it can help. I think Acer has a updated BIOS dated 2010, the BIOS version i have right now is dated 2009.

    Maybe the reason hot-swapping isn't working properly for me is because I switched the OEM case with one that supports esata, which the OEM case didn't.

    BTW this happens in both win 7 and Win 8.
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  7. #17


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    A BIOS update fixed that same problem on a OEM desktop for me, might be worth a try.
    I also changed the case on my OEM desktop, it runs a lot cooler now.
    The new case should have no affect on hot-swapping, especially if it was doing it on Windows 7 leads me to think it's a BIOS issue.
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  8. #18


    Posts : 41
    Windows 7 x64 Home and 8.1 x64 Enterprise


    Quote Originally Posted by Dave76 View Post
    A BIOS update fixed that same problem on a OEM desktop for me, might be worth a try.
    I also changed the case on my OEM desktop, it runs a lot cooler now.
    The new case should have no affect on hot-swapping, especially if it was doing it on Windows 7 leads me to think it's a BIOS issue.
    alright thx. i'll do it when my exams are over, since I don't know how to update the bios.
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  9. #19


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    OEMs are usually pretty easy, post back here when you're ready and I'll give you the procedure.
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  10. #20


    Posts : 41
    Windows 7 x64 Home and 8.1 x64 Enterprise


    Quote Originally Posted by Dave76 View Post
    OEMs are usually pretty easy, post back here when you're ready and I'll give you the procedure.
    ok i finished my exams and I downloaded the bios, what do I do next? it is in a zip file and the readme.txt isn't clear enough for me to know what to do next.

    EDIT: k i checked my bios version in msinfo, i guess i do have the latest bios already.
    Last edited by imeem; 02 Feb 2013 at 14:08.
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