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Need more help with Win 8 & 7 dual-boot (UEFI, GPT)

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  1. #1



    Member

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    Need more help with Win 8 & 7 dual-boot (UEFI, GPT)


    I have recently been struggling since the beginning of the week trying to install an OEM copy of Windows 7 Home Premium 64-bit onto my new Acer Aspire V3 laptop which came with Windows 8 64 bit pre-installed.

    I made a thread over at Seven Forums: Ordered new laptop with Win 8 but plan to install Win 7 - partitions? - Windows 7 Forums However, I've gotten more and more confused and was advised to come over here to ask for assistance.

    Here are the tutorials I have been linked to:
    Step 1 to 5 of: Downgrade Windows 8 to Windows 7
    Follow: Dual Boot Installation - Windows 8 and Windows 7 or Vista

    My current hard drive setup looks like this:
    Click image for larger version

    The "Win 7 (E:)" is a new partition I made for Windows 7 to be installed onto. The approximately 21GB recovery partition has been removed in DiskPart.

    Disk 1 is the USB flash drive I copied the data from Windows 7 installation disk and rearranged and renamed folders and files according to this tutorial: UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

    I have also disabled "Secure Boot" within the BIOS although UEFI is still enabled. I have confirmed that Secure Boot is off by using Windows PowerShell run as administrator and using the line
    "confirm-SecureBootUEFI"
    Response:
    "False"

    The hard drive is set up in GPT mode.

    I have made:

    1. a recovery DVD
    2. a recovery drive on a USB

    I have not made a system image as I do not possess any storage media large enough to do one.

    Every time I've tried to install Windows 7, it either had a 0x0 error (from within Windows 8), could not install with GPT or frozen on the "Windows Starting" logo.

    The USB flash drive has been cleaned and formatted with DiskPart. I followed these instructions: UEFI Bootable USB Flash Drive - Create in Windows

    This post has been referred to me several times: cant install windows 7 in the preinstalled windows 8 laptop - Windows 7 Forums

    And as I believe we both share the same Acer BIOS, I fear I'm in the same situation as this guy: GPT Hard drive issues with installing Windows 7 Ultimate.. - Windows 7 Forums

    I am really stuck and really tired, frustrated and pretty bored of all this now. I want to keep the pre-installed Windows 8 installation while dual-booting with Windows 7. I don't want to lose Windows 8 as I paid for the Windows 8 licence in the price of the laptop. I'm truly annoyed and I can't budget a new USB HDD in my student loan very easily.

    I would very much prefer to use Windows 7 as my primary operating system as I prefer it over Windows 8 and I know that all my programs will run on Windows 7. I don't know how well SolidWorks runs with Windows 8 but even if it's fine with Windows 8 I don't want to use Windows 8! I still want to keep it though - I technically paid for it.

    I'm rather desperate for help now!

    Edit: more to add:

    Quote Originally Posted by theog View Post
    Quote Originally Posted by jayrap View Post
    but when I try to pick my partition I made for Windows 7 it's greyed out where it says next
    You not booting the DVD/USB in uEFI mode.

    Attachment 249877

    Also, I have no boot menu option in UEFI boot

    Acer is F12, but check your manual to be sure.


    So F12 was disabled in the BIOS I found


    I enabled it, then restarted it in UEFI - pressed F12 and selected the USB but it doesn't say UEFI in front of the USB drive.


    Select it anyway


    "Windows is loading files"
    "Starting Windows"


    Windows logo freezes and stays frozen

    Edit: also tried with just the DVD - DVD drive did not have UEFI in front of it either - froze in the same place. Maybe I did not setup the USB right? I did follow the instructions for UEFI though. Grrr! I'm really hoping that I don't have to result to cleaning the entire HDD and converting to MBR because as I said, I can't keep spending money on this - I don't have an external HDD I can use to image the existing data to.
    Last edited by jayrap; 12 Jan 2013 at 08:43 PM.


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  2. #2



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    My boot options
    Click image for larger version

    This is where Windows 7 on the USB drive freezes before I get to the install screen
    Click image for larger version
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  3. #3
    theog's Avatar

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    Downgrade Windows 8 to Windows 7

    3) Reset BIOS to default, and reboot to BIOS make sure Secure Boot is disabled.
    NOTE: Check your manufacturer's uEFI BIOS manual for settings.


    Your screenshot is showing, that you are not booting in uEFI mode.


    Click image for larger version
      My System SpecsSystem Spec

  4. #4



    Member

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    I don't get this, I've gone back to default settings several times, now, followed by going back, pressing F2 and disabling Secure Boot, while enabling F12 boot - I start up and it goes straight back to Windows 8 log on if I leave it, or if I select F12, I'm still given those 2 options, neither of which has UEFI listed in front of them. I could video record if it helps provide more information this evening if it will assist my assistance otherwise it looks like I'm going to have to back up everything and then clean the HDD turning it to MBR mode!
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  5. #5
    theog's Avatar

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    I believe said the notebook was Acer without looking.
    Will your ACER Recovery DVD boot in uEFI mode?
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  6. #6
    jimbo45's Avatar

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    Hi there
    I think (although correct me if I'm wrong) that unless you have a UEFI boot you can't boot Windows 7 or earlier from a GPT disk. -- I could be wrong on this one but there are problems I know when booting from GPT disks. No UEFI then no GPT boot.

    Also when booting in UEFI mode and disabling secure boot there's often another option in the BIOS which sets the default boot order when secure boot is disabled.

    Personally the whole dual booting arena is fraught with problems when using UEFI -- so unless you really need physical hardware for either W7 or Windows 8 why not install EITHER W7 or Windows 8 as your primary OS (your choice) and install the other one as a Virtual machine on vmplayer (free).

    The overhead will be fairly small these days and the advantage is you don't have to re-boot when you want to use the other OS. Just power on and shut down the VM when you need to.

    Allocate 1 GB RAM - should be enough for a W7 / Windows 8 virtual machine for most purposes.

    Note USB drives aren't UEFI enabled -- so you won't see UEFI option on the BIOS against these devices. You CAN boot an OS from this type of device and install to a GPT drive -- just ensure that the OS you are installing supports boot from GPT disks.

    You only need to disable the secure boot while installing the OS. S

    Secure boot also won't allow (currently) any earlier OS than Windows 8 to boot -- no signature in the BIOS so in any case if you want to dual boot you'll have to turn off secure boot -- not UEFI itself --which is probably fixed in your BIOS.

    Cheers
    jimbo
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  7. #7



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    og: I'll have to get back to you on that - I'm routing some cat5e through the house today
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  8. #8
    theog's Avatar

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    Quote Originally Posted by jimbo45 View Post
    Hi there


    Note USB drives aren't UEFI enabled -- so you won't see UEFI option on the BIOS against these devices. You CAN boot an OS from this type of device and install to a GPT drive -- just ensure that the OS you are installing supports boot from GPT disks.

    You only need to disable the secure boot while installing the OS. S

    Secure boot also won't allow (currently) any earlier OS than Windows 8 to boot -- no signature in the BIOS so in any case if you want to dual boot you'll have to turn off secure boot -- not UEFI itself --which is probably fixed in your BIOS.

    Cheers
    jimbo
    UEFI Bootable USB Flash Drive - Create in Windows

    Name:  UEFI_USB_Boot_Menu.jpg
Views: 14389
Size:  18.4 KB
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  9. #9
    jimbo45's Avatar

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    Quote Originally Posted by theog View Post
    Quote Originally Posted by jimbo45 View Post
    Hi there


    Note USB drives aren't UEFI enabled -- so you won't see UEFI option on the BIOS against these devices. You CAN boot an OS from this type of device and install to a GPT drive -- just ensure that the OS you are installing supports boot from GPT disks.

    You only need to disable the secure boot while installing the OS. S

    Secure boot also won't allow (currently) any earlier OS than Windows 8 to boot -- no signature in the BIOS so in any case if you want to dual boot you'll have to turn off secure boot -- not UEFI itself --which is probably fixed in your BIOS.

    Cheers
    jimbo
    UEFI Bootable USB Flash Drive - Create in Windows

    Name:  UEFI_USB_Boot_Menu.jpg
Views: 14389
Size:  18.4 KB
    Hi there

    Thanks for the info :
    at least we learn something every day -- however some BIOS's might not record the USB as being UEFI enabled.

    Principle is still the same a SECURE / PROTECTED UEFI boot won't boot earlier OS'es than Windows 8 until signatures are fixed in the BIOS - currently I think only Windows 8 has these although in future things like UBUNTU could have them.

    Cheers
    jimbo
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  10. #10



    Senior Member

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    jayrap, did you do the extra step when you set up the flash drive of adding a folder in the EFI folder. A Windows 7 flash drive will not boot UEFI unless you do.

    Secure boot or not, you should still have the UEFI option.
      My System SpecsSystem Spec

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