Windows 10: change BIOS from legacy to EUFI

Discus and support change BIOS from legacy to EUFI in Windows 10 Gaming to solve the problem; To upgrade for Windows 11 I need to upgrade to EUFI... Discussion in 'Windows 10 Gaming' started by Thomas Foxman., May 30, 2025 at 3:52 PM.

  1. change BIOS from legacy to EUFI


    To upgrade for Windows 11 I need to upgrade to EUFI

    :)
     
    Thomas Foxman., May 30, 2025 at 3:52 PM
    #1

  2. Struggling to install windows 11, when trying to switch from LEGACY -> EUFI BIOS mode, I get redirected back to the BIOS on boot.

    Hello, Im trying to install windows 11 on my computer. I have enabled TPM, but i am struggling to enable secure boot. Ive noticed that in order to enable secure boot your bios needs to be in the EUFI mode, however mine is in the legacy mode. I have tried to switch this to EUFI mode, and then Save changes and restart, however, my computer does not boot, and instead just returns to the BIOS. I was wondering if any smart people out there would know if there was any way of fixing this, or is it an issue with my hardware not being compatible with the EUFI BIOS mode? My BIOS Version/date is stated as "American Megatrends Inc. 3002, 3/10/2021" and my mother board is PRIME B450M-A. Thanks a lot
     
    Jake Stikkelorum1, May 30, 2025 at 3:55 PM
    #2
  3. Legacy v UEFI - Dell E6420 BIOS

    Do you already have an Operating system installed in Legacy mode? If so switching to EUFI mode will stop the OS from booting. You will have to have a EUFI bootable drive to install an OS like Windows 10. Yes the benefits are that 2TB and bigger partitions
    are supported as well as supporting fast boot. EUFI is faster and more efficient than Legacy. Hope that helps!
     
    MikeSnyder61704, May 30, 2025 at 3:55 PM
    #3
  4. change BIOS from legacy to EUFI

    Support Had Me Change From UEFI to Legacy mode in BIOS Re: DISASTER

    This was Acronis True Image 2018 support not MS or Lenovo (P51). Those familiar with True Image know that you can create bootable media on a flash drive to run the software. No problem with True Image 2017 but True Image 2018 did not work. Although the flash drive loaded the program the GUI was garbled and I was unable to navigate. Support had me switch from UEFI back to Legacy and that was a bad idea. Sorry for the caps but this was what I wrote back to Acronis support. FYI the rest of the message was not in caps:

    SUPPORT: I have discussed this issue with the Experts team and they have suggested testing whether changing from UEFI to Legacy mode in BIOS fixes the issue or not. This step is suggested for testing purpose only.
    THAT WAS A TERRIBLE SUGGESTION. I WENT INTO THE BIOS AND DID AS YOU INSTRUCTED AND CHANGED FROM UEFI TO LEGACY. I CLICKED EXIT AND SAVE AND WITH THE FLASH DRIVE PLUGGED IN THE 2018 BOOTABLE MEDIA I WENT TO BOOT MENU OPTIONS AND CHOOSE BOOT FROM FLASH DRIVE AND I WAS DROPPED BACK INTO THE BOOT MENU OPTION. SEE ENCLOSED PICTURE. I THEN SELECTED BOOT FROM THE SSD DRIVE AND I WAS AGAIN STUCK IN A LOOP THAT DROPPED ME BACK INTO THE BOOT MENU OPTION. I THEN TRIED BOOTING FROM THE SECOND INTERNAL HDD OPTION AND AGAIN WAS DROPPED BACK INTO THE BOOT MENU. I COULD NOT GET BACK INTO THE BIOS TO CHANGE BACK TO UEFI FROM LEGACY. I HAD TO DO A HARD SHUTDOWN AND POWER BACK ON AND ONLY THEN WAS I ABLE TO GET INTO THE BIOS AND CHANGE BACK FROM LEGACY TO UEFI.

    This is a pic of the loop I was caught up in. Why do you all think I was not able to boot either from the flash drive or the SSD or the HDD once I changed from UEFI to Legacy in the BIOS? TIA.



    change BIOS from legacy to EUFI ge-uefi-legacy-mode-bios-re-disaster-picture-boot-menu-loop-after-you-told-me-change-bios-legacy.jpg
     
    phaedruspress, May 30, 2025 at 3:55 PM
    #4
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change BIOS from legacy to EUFI

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    change BIOS from legacy to EUFI: To upgrade for Windows 11 I need to upgrade to EUFI https://answers.microsoft.com/en-us/windows/forum/all/change-bios-from-legacy-to-eufi/d6f576ea-2d5f-426f-b3eb-8d4ceaecddcc
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