How to prevent Windows 7 installation from booting in UEFI mode?

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  1. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
       New #1

    How to prevent Windows 7 installation from booting in UEFI mode?


    Hi there. I've built a brand new HTPC and it has UEFI BIOS on it. I've tried to install Windows 7 with USB drive that I've made UEFI bootable with Rufus, but it gives me blue screen everytime after Windows goes from "Windows files are loading" screen to a Windows logo animation. The hard drive that I'm using is set to MBR, (I know that I should set it to GPT for UEFI installation). I don't want to have a UEFI version of Windows in my system anymore. How do I install legacy version of Windows 7 from USB stick on UEFI BIOS capable PC with HDD using MBR?
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  3. ThrashZone
    Posts : 20,583
    Win-7-Pro64bit 7-H-Prem-64bit
       New #2

    Hi and welcome to SevenForums,
    Enter your bios and go to Advanced and boot and disable secure boot,
    If there is no option to disable secure boot look for OS Type and switch to Other os
    After installing Microsoft Update KB3133977 for Windows 7, some users may encounter a "Secure Boot Violation" , which makes the system fail to boot into the operating system.
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  4. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
    Thread Starter
       New #3

    My UEFI BIOS has the Secure Boot option. I have disabled it.
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  6. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
    Thread Starter
       New #4

    Can someone tell me if I need to use MBR partition scheme for BIOS or UEFI-CSM, or MBR partition scheme for UEFI for legacy installation of Windows?
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  7. ThrashZone
    Posts : 20,583
    Win-7-Pro64bit 7-H-Prem-64bit
       New #5

    Hi,
    I use mbr but I also use Rufus non uefi option in the booting too
    Rufus has uefi compatibility but I wouldn't boot to that listing if on mbr
    Only if using gtp or what ever it is :)
    USB Windows 7 Installation Key Drive - Create
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  8. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
    Thread Starter
       New #6

    I've made my USB drive with Windows installation with MBR partition scheme for BIOS or UEFI with no luck... I've disabled Fast Boot, Secure Boot options in the UEFI BIOS. I've set that only legacy drives would show up.
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  10. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
    Thread Starter
       New #7

    I also found that to make sure that you won't boot in UEFI mode, you can delete "efi" folder from installation root on your media. I'll try that. Pictures shows what settings I use for making the USB drive.
    Attached Thumbnails Attached Thumbnails How to prevent Windows 7 installation from booting in UEFI mode?-rufus.jpg  
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  11. ThrashZone
    Posts : 20,583
    Win-7-Pro64bit 7-H-Prem-64bit
       New #8

    Hi,
    The disk it's self might need to be reformatted
    Convert GPT Disk to MBR Disk

    Otherwise just boot to the device and not to a uefi listing in the boot list usually works for me
    Plus do not create a partition to install on
    Just clean the entire hdd and install on it
    You can resize the C drive later
    Which is the way I like it with No 100mb system reserved partitions only the C drive
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  12. Bullet Tango
    Posts : 10
    Windows 7 Ultimate x64
    Thread Starter
       New #9

    Thank for your reply TrashZone, I've solved my problem. My HDD was set to MBR. I've made bootable USB stick with settings that you can see in picture above. While Rufus was busy I've changed SATA cable from one MoBo port to another and RAM stick from one slot to another. Surprise, surprise... After 6 days of headache I've get it working.
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  13. ThrashZone
    Posts : 20,583
    Win-7-Pro64bit 7-H-Prem-64bit
       New #10

    Hi,
    Good deal :)
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