Windows 10: What is the difference beteen uefi and legacy ?

Discus and support What is the difference beteen uefi and legacy ? in Windows 10 Support to solve the problem; in my motherboard bios I have two choices for operating system: uefi and legacy or CSM. Which one I should choose and what is the difference ? 145036 Discussion in 'Windows 10 Support' started by William40, Nov 23, 2019.

  1. William40 Win User

    What is the difference beteen uefi and legacy ?


    in my motherboard bios I have two choices for operating system: uefi and legacy or CSM. Which one I should choose and what is the difference ?

    :)
     
    William40, Nov 23, 2019
    #1
  2. 72westy Win User

    Legacy to UEFI

    I'm debating moving to UEFI form my now legacy BIOS (Award Software Int.) the mother board is a GA-Z68XP-UD3 rev1.0 on the the following link it shows a UEFI BIOS U1J )UEFI BIOS)

    GA-Z68XP-UD3 (rev. 1.0) | Motherboard - GIGABYTE Global

    Currently I'm running the legacy F10 BIOS. Does installing the UEFI BIOS automatically take care of everything to get to the UEFI BIOS? Installing the UEFI BIOS following the instructions using the Q-flash method GIGABYTE How to Reflash Motherboard BIOS

    What's steps do I take and in what order?

    Much appreciated
     
    72westy, Nov 23, 2019
    #2
  3. jebediah Win User
    UEFI or Legacy?


    So i went for a clean Windows 10 installation on my Aspire E13.
    To boot from USB i had to switch from UEFI to Legacy, otherwise the USB drive would not be listed.

    However. After the installation was finished my touchpad was not even recognized, i mean, i was not even listed in the device manager, so i read somewhere on the Acer forum that switching back to UEFI would solve this problem.
    Well, i switched back to UEFI and now when the laptop start i recieve a message that says -No bootable device found!

    Even if i try to use my bootable USB drive, the list is empty.
    So i switched back to Legace again and guess what. Windows 10 starts like there was no problem.

    So, what's the different between UEFI and Legacy? The bios tells me -Use UEFI on Win 8 and above to use all the benefits.
    And why oh why can't i boot up from a existing and working Windows 10 drive using UEFI?
     
    jebediah, Nov 23, 2019
    #3
  4. What is the difference beteen uefi and legacy ?

    Quick UEFI/Legacy question

    I think it used to say, BIOS mode UEFI, but could it be on legacy because my sapphire hd 7970 only have legacy, gigabyte hd 7970 have uefi?
     
    HarvesterOfSorrow, Nov 23, 2019
    #4
Thema:

What is the difference beteen uefi and legacy ?

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