Windows 8 and 8.1 Forums

Win 8 Installed First.

  1. #1


    Posts : 6
    windows 8

    Win 8 Installed First.


    Hi.
    I'm new to forums
    I have win8 installed first. I would like to dual boot with win 7.

    I have disabled secure boot and enabled legacy all that special stuff I'm supposed to do.

    No matter what I do I keep getting error Windows can not be installed on this disk. The selected disk is of the GPT partition style.

    What step am I missing? I DO NOT want to format. Is there a method to get rid of uefi would I have to find a downgraded bios?

    Thank You.

      My System SpecsSystem Spec

  2. #2


    Posts : 1,121
    Windows 8.1 x64


    Are you using a Windows 7 install DVD and booting to the UEFI version?

    What is the configuration of the partition you are trying to install to, formatted or not, how large, etc.?

    Could you get a picture of your Disk Management window and attach using the paperclip on the advanced replies?
      My System SpecsSystem Spec

  3. #3


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Welcome to EightForums.

    You can install Windows 7 x64 in dual boot first or second.

    Follow Step one to five in this tutorial:
    Downgrade Windows 8 to Windows 7
    Warning ,you must have the uEFI/BIOS firmware settings in Step Three set.
    Also take note of the note about Dual booting.

    Than follow this tutorial: (installing in uEFI mode.)
    Dual Boot Installation - Windows 8 and Windows 7 or Vista





    You will need to buy a Windows 7 license.
    Last edited by theog; 16 Feb 2013 at 21:39.
      My System SpecsSystem Spec

  4. #4


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


    Acer
      My System SpecsSystem Spec

  5. #5


    Posts : 6
    windows 8


    I'm sorry but I really don't want to format anything to do this dual boot.

    There must be a way to do this without formatting. I have win7 64bit and it still gives me the error above in my original post.

    I have created a new partition etc....

    I already have win 8 installed this was done by manufacturer(acer).

    The 2nd tutorial only applies to a windows developer preview(you can't get it anymore).

    I will try to get screenshot wife's using it right now.
      My System SpecsSystem Spec

  6. #6


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by Joinaunion View Post
    I'm sorry but I really don't want to format anything to do this dual boot.

    There must be a way to do this without formatting. I have win7 64bit and it still gives me the error above in my original post.

    I have created a new partition etc....

    I already have win 8 installed this was done by manufacturer(acer).

    The 2nd tutorial only applies to a windows developer preview(you can't get it anymore).

    I will try to get screenshot wife's using it right now.
    I would re-read both tutorials, than post back.
      My System SpecsSystem Spec

  7. #7


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    An alternative would be to install Windows 7 in virtual. That works better than dual boot - in my book. Here is how - just specify Windows 7 in lieu of /8.
      My System SpecsSystem Spec

  8. #8


    Posts : 6
    windows 8


    Theog.
    The first tutorial shows the person getting the same error as me.


    As you can see windows cannot be installed on disk0 partion3.
    So this tutorial won't work.
    The second tutorial applies to the relesed preview copy of windows 8.This is no longer available from microsoft.
      My System SpecsSystem Spec

  9. #9


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    1) Why do you want to install Windows 7 on the partition wth Windows 8 is in install to?
    Windows 7 would need to be installed to Partition 5 for a dual boot.
    Also the screenshot you post is Windows 7 not Windows 8.


    Click image for larger version

    2) The dual boot tutorial is for Windows 8 DP,CP,RP, & RTM.
    Last edited by theog; 15 Feb 2013 at 21:22.
      My System SpecsSystem Spec

  10. #10


    Posts : 6
    windows 8


    Theog,
    Yes the dual boot screenshot I posted is for windows7 and it can't be installed.

    As I mentioned I want to dual boot win8 and win7 I already have win8 installed.

    Neither of the tutorials you posted apply to what I want to do.

    The tutorial is out of date because you need a copy of the windows 8 preview,that is no longer available to anyone.
      My System SpecsSystem Spec

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