Windows 8 and 8.1 Forums


I installed with NTFS and legacy bios, how hard to change?

  1. #1

    I installed with NTFS and legacy bios, how hard to change?


    I built my computer from parts I ordered from Amazon, and installed Windows myself. I didn't fathom the differences between GPT and NTFS, and just picked NTFS format for my installation. I've since discovered that Secure Boot isn't possible without bios being in UEFI mode, which I believe requires your OS to be installed on a GPT drive (someone correct me if I'm wrong about that). I know that when I tried just changing it from Legacy to UEFI in bios and rebooting, I ended up in a shell program with no inkling of how to get my machine to boot. Fortunately I was able to discover how to get out of the shell and back into bios, to change it back.

    So, how difficult would it be for me to get my system switched around so that I could enable Secure Boot?

    If I make a disk image of my boot drive, which is currently NTFS partitioned, can I reformat it as GPT and then restore using that image?

      My System SpecsSystem Spec

  2. #2


    Posts : 2,690
    Windows 3.1 > Windows 10


    secureboot supports ntfs

    to use secureboot you need X64 software, UEFI and GPT partitions
      My System SpecsSystem Spec

  3. #3


    Austin TX metro area
    Posts : 638
    Windows 7 Pro 64bit [MS blue-disk set]


    If memory serves me, both UEFI and GPT/NTFS have to "be" for Windows 8 to work. Yes, if not already, your harddrive has to be GPT, not MBR.
      My System SpecsSystem Spec

  4. #4


    Posts : 2,690
    Windows 3.1 > Windows 10


    UEFI = x64 = GPT partitions = Secureboot

    x86 is MBR / Legacy only
      My System SpecsSystem Spec

  5. #5


    I don't know what you mean by X64

    when I look in System Information, it tells me Secure Boot is unsupported. How do I fix that?
      My System SpecsSystem Spec

  6. #6


    Posts : 2,690
    Windows 3.1 > Windows 10


    what version of windows you install? x86 (32Bit) or x64 (64Bit)
      My System SpecsSystem Spec

  7. #7


    64 bit
      My System SpecsSystem Spec

  8. #8


    Posts : 2,690
    Windows 3.1 > Windows 10


    You need to go into bios setting and enable UEFI and disable Legacy support,
    boot from setup media and setup should create 4 GPT partitions
    If setup only creates 2 MBR partitions it booted via Legacy
      My System SpecsSystem Spec

  9. #9


    Posts : 2,690
    Windows 3.1 > Windows 10


    If you already have your " C " setup to your liking - image just your C partition

    Install windows again in UEFI mode and restore your C partition only
      My System SpecsSystem Spec

  10. #10


    in other words, I would need to re-format my boot drive, correct? which would mean losing everything on it.

    So, in that case could an image made of my NTFS drive be restored to my now GPT drive?
      My System SpecsSystem Spec

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I installed with NTFS and legacy bios, how hard to change?
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