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Thread: Keeping GPT format on a new partition: installing windows without bootcamp?

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  1. #1
    karamazovmm's Avatar スマトラ警備隊
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    Default Keeping GPT format on a new partition: installing windows without bootcamp?

    I want to keep the gpt format on a new partition. And currently it seems impossible to do that, even with several reinstalls and different methods.

    Here is what I want to do:

    I want to install win 2012 without a CMS BIOS, meaning I want to use its UEFI booting capabilities to avoid the bios emulation that bootcamp uses.

    Already tried methods:

    1) simple partiton via disk utility and diskutil using FAT
    Result: Failure to detect GPT in win 2012 install -

    2) Same as 1 using HFS+
    Result: thinking that when I format for fat it creates a hybrid gpt partition, resulting in the aforementioned error, it still doesnt let me install due to failure to detect gpt.

    Im out of ideas, I read in a mac magazine in brazil that it was a simple thing to do, currently thinking of making the partitions that I need when installing osx using disk utility, so that it avoids the hybrid gpt.

    Or this could be caused by mac using already a hybrid gpt as default and in the end I will need a program to make a true gpt.

    Currently I foresee a problem, I dont know if the EFI bootloader would accept and read the windows partition, since it engages when a hybrid gpt is made

    I also foresee that if this is done, we could have switchable gpus in windows.

    The very ugly forgive, but beauty is essential - Vinicius de Moraes

  2. #2
    karamazovmm's Avatar スマトラ警備隊
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    Default Re: Keeping GPT format on a new partition: installing windows without bootcamp?

    Rundown of things that I thought

    thing here is that macs use EFI, but they dont strictly follow intel standards, its a frankenstein basically.

    The main problem being that I want to avoid the CMS BIOS (bios emulation is autodetected and auto applied by the EFI)

    People have done this with workarounds unneeded and sincerely unwanted.

    I want, currently, to try to make this as simple as possible, I might have found a way, which is basically to use gdisk to create a new gpt protective boot mbr, to simply kill that aberration which is the hybrid mbr that they created in that gpt.

    by doing this I would have no other problems in installing win 8 or even win 7 sp1, though for the latter some hacks regarding which preference based on the bootloader for the installer would be needed, the el torino always defaults to mbr instead of gpt, thus emulating bios at the efi bootloader and crapping out any attempt to make a gpt install.

    The very ugly forgive, but beauty is essential - Vinicius de Moraes

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