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    How do I disable Secure Boot in UX31A with Windows8?

    Discussion in 'Asus' started by skipperx, Jan 19, 2015.

  1. skipperx

    skipperx Newbie

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    Hello:

    I just got the notebook used. I am going to dual boot it with linux. I am trying to disable Secure Boot for Linux installation.

    In Bios, I see this

    Security

    I/O Interface Security
    System Mode State User
    Secure Boot State Enabled

    Secure Boot Control [Enabled]
    Key Management

    Do I change Secure Boot State to Disabled?
    It is black (not blue) and I cannot change it.

    The Bios version is 219 and seems to be current.

    Can someone please tell me how to disable the thing.

    Thank you.
     
    Last edited: Jan 23, 2015
    skipperx, Jan 19, 2015
    #1
  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Meaker@Sager, Jan 19, 2015
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  3. skipperx

    skipperx Newbie

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    Thank you for getting back.

    I read the link and checked my computer. CSM is disabled.
     
    skipperx, Jan 19, 2015
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  4. skipperx

    skipperx Newbie

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    I could disable 'Secure Boot Control'. That automatically disabled 'Secure Boot State'. Now the status is

    Secure Boot State ----- Disabled
    Secure Boot Control ----- Disabled

    I am hoping that disables 'Secure Boot'.

    It will be nice if someone who knows can confirm it.
    I will update this if and when I learn this is not the case later.
     
    skipperx, Jan 20, 2015
    #4
  5. Meaker@Sager

    Meaker@Sager Company Representative

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    That should be it disabled as far as I recall.
     
    Meaker@Sager, Jan 20, 2015
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  6. Kevin@GenTechPC

    Kevin@GenTechPC Company Representative

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    Disable Secure Boot State, and then Boot Control.
    Verify if there's also an UEFI to Legacy option.
     
    Kevin@GenTechPC, Jan 21, 2015
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  7. Prostar Computer

    Prostar Computer Company Representative

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    As long as both show "Disabled," your Secure Boot is off. One way to verify is that you should see the "Secure Boot is not configured properly" watermark in Windows 8(.1), unless you have the Windows update that disables that notification.
     
    Prostar Computer, Jan 22, 2015
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  8. Kevin@GenTechPC

    Kevin@GenTechPC Company Representative

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    Do you still have any trouble setting these options?
     
    Kevin@GenTechPC, Jan 22, 2015
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  9. skipperx

    skipperx Newbie

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    Since I now have both Secure Boot State and Control as 'Disabled' and see no notification, I will mark it Solved. If I later learn that this is not the case, I will reopen the thread.

    Thanks everyone.
     
    skipperx, Jan 23, 2015
    #9
  10. picolino

    picolino Notebook Consultant

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    But why would you want to disable Secure Boot for Linux installation? I think most Linux distros support it.

    "CSM" is an acronym for "Compatibility Standard Module", which in itself is another term for Legacy BIOS.

    However, since Windows 8 comes almost exclusively installed in EFI mode ( you can make sure of this first however),
    you must install Linux in EFI mode too, as it is described in the following link: https://help.ubuntu.com/community/UEFI#Installing_Ubuntu_in_EFI_mode

    So, you would not want to enable CSM mode in your BIOS.
     
    picolino, Jan 23, 2015
    #10
  11. Meaker@Sager

    Meaker@Sager Company Representative

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    I'veheard that getting it to dual boot can be an issue but iI would imagine it depends what distro you are using.
     
    Meaker@Sager, Jan 24, 2015
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  12. Prostar Computer

    Prostar Computer Company Representative

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    Setting up a dual boot shouldn't be an issue, per se, but I believe there's a particular method or two to it so that the GRUB bootloader displays both operating systems.
     
    Prostar Computer, Jan 28, 2015
    #12