Windows 8 and 8.1 Forums


UEFI firmware associated with Windows 8

  1. #1


    Posts : 68
    Windows 8 Pro 64-bit

    UEFI firmware associated with Windows 8


    I bought a Lenovo
    It has an UEFI firmware associated with Windows 8 OS protecting it by secure Boot feature.
    When i boot in recovery mode i could see an option saying about UEFI software/hardware.

    I used GParted and deleted ALL its partitions.
    I installed 8 again with my partitonign.
    No UEFI present there and no option on the recovery menu as before.
    How can i re-associate UEFI firmware with Win8 OS as it was when i bough it?


    What's the reason of UEFI existance anyway? In what ways can it be usefull?

      My System SpecsSystem Spec

  2. #2


    Redmond
    Posts : 651
    Windows 8.1 x64


    To have the options to enable Secure Boot, you need to do a UEFI install from UEFI-capable media (DVD, FAT32-formatted USB key, UEFI-compatible PXE network boot) onto a machine with UEFI enabled. If you installed from media that wasn't a DVD, FAT32 USB key, or a PXE boot from a UEFI-capable boot server, you actually installed in BIOS mode (the Compatibility Support Module, or CSM, is activated in the UEFI OS to allow this). Also, your partitions need to be GPT partitions, not MBR, so if you created MBR partitions during the installation (even if you installed from proper media and selected the UEFI boot option to do so) you still won't have a UEFI install.

    From what you're seeing, you have a BIOS CSM install, not a UEFI install, so you've done something wrong (you might need to boot to a boot option menu on the Lenovo to select a "UEFI" boot option versus a normal one, for instance). And there are a lot of benefits to UEFI over BIOS (security being only one of them), and most of them relate to boot and runtime performance of certain components and drivers.
      My System SpecsSystem Spec

  3. #3


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


    How to clean install with a uEFI /BIOS firmware:
    UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with

    You must boot the DVD in uEFI mode.

    Click image for larger version
      My System SpecsSystem Spec

  4. #4


    Posts : 68
    Windows 8 Pro 64-bit


    Veru nice tutorila thank you very mich,

    I reas all the links associated woth it.

    I just cant initiate the process because i dont know which F key my Lenovo uses to bring up the motheroard's Boot menu so to select UEFI from there?
      My System SpecsSystem Spec

  5. #5


    Posts : 68
    Windows 8 Pro 64-bit


    a) Signed Boot Loader = An OS installation in UEFI Mode so a system can boot safely only from that and no other OS or ISO Image?


    b) I tried to use GParted via a bootable USB drive and UEFI didn't allow that.
    Can i tell somehow UEFI to let that usb drive boot without disablign the SecureBoot feature? As in a a signed Boot Application?


    Is UEFI something like a whitelist of OSes and Applications tat are allowed by the UEFI firmware to load on a specific machine?
    Much like a Firmware Firewall to allow/dis-allow Boot stuff?

    This is what its been designed for?
      My System SpecsSystem Spec

  6. #6


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


    Quote Originally Posted by nikos View Post
    Veru nice tutorila thank you very mich,

    I reas all the links associated woth it.

    I just cant initiate the process because i dont know which F key my Lenovo uses to bring up the motheroard's Boot menu so to select UEFI from there?
    From the Lenovo G480 manual.

    Quote Originally Posted by Lenovo
    Start the computer. When the Lenovo logo comes up, immediately press F12;
    on the boot sequence menu, select the optical drive as the first boot-up device.
      My System SpecsSystem Spec

  7. #7


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


    Quote Originally Posted by nikos View Post
    [COLOR=#333333]


    b) I tried to use GParted via a bootable USB drive and UEFI didn't allow that.
    Can i tell somehow UEFI to let that usb drive boot without disablign the SecureBoot feature? As in a a signed Boot Application?

    I would look for a 3rd party Partitioning,Backup & Cloning software, which fully supports Windows 8, uEFI, GPT & Secure Boot.
    Which is signed by Microsoft.


    The only 3rd party software that I know of, that fully supports Windows 8 is PARAGON 12, which has been signed by Microsoft.

    All the partitioning can done in Windows.
      My System SpecsSystem Spec

  8. #8


    Posts : 68
    Windows 8 Pro 64-bit


    Quote Originally Posted by theog View Post
    Quote Originally Posted by nikos View Post
    Veru nice tutorila thank you very mich,

    I reas all the links associated woth it.

    I just cant initiate the process because i dont know which F key my Lenovo uses to bring up the motheroard's Boot menu so to select UEFI from there?
    From the Lenovo G480 manual.

    Quote Originally Posted by Lenovo
    Start the computer. When the Lenovo logo comes up, immediately press F12;
    on the boot sequence menu, select the optical drive as the first boot-up device.
    F12 is for Boot Selection media
    F12 doesn't present an image of UEFI OS Win8 DVD Setup like Theog's picture in post No3.
      My System SpecsSystem Spec

  9. #9


    Posts : 68
    Windows 8 Pro 64-bit


    Quote Originally Posted by theog View Post
    Quote Originally Posted by nikos View Post
    [COLOR=#333333]


    b) I tried to use GParted via a bootable USB drive and UEFI didn't allow that.
    Can i tell somehow UEFI to let that usb drive boot without disablign the SecureBoot feature? As in a a signed Boot Application?

    I would look for a 3rd party Partitioning,Backup & Cloning software, which fully supports Windows 8, uEFI, GPT & Secure Boot.
    Which is signed by Microsoft.


    The only 3rd party software that I know of, that fully supports Windows 8 is PARAGON 12, which has been signed by Microsoft.

    All the partitioning can done in Windows.
    And if i was compelled to use GParted which i very much like for partitioning?

    How could i load it via usb as an acceptable signed application?

    And to take it further, how to let any Bootable USB ISO run without disabling SecureBoot but instead tell SecureBoot to let it be as a trusted Boot Application?
      My System SpecsSystem Spec

  10. #10


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


    Quote Originally Posted by nikos
    F12 is for Boot Selection media
    F12 doesn't present an image of UEFI OS Windows 8 DVD Setup like Theog's picture in post No3.

    Where do you buy your x64 DVD from?


    And if i was compelled to use GParted which i very much like for partitioning?

    How could i load it via usb as an acceptable signed application?

    And to take it further, how to let any Bootable USB ISO run without disabling SecureBoot but instead tell SecureBoot to let it be as a trusted Boot Application?

    The software manufacturer would need to have the software signed by Microsoft.
      My System SpecsSystem Spec

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UEFI firmware associated with Windows 8
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