how to set up the UEFI bios ?

nadfyv
nadfyv Member Posts: 42 New User
edited March 2023 in 2014 Archives

I downgraded to windows 7 and I decided to get back on windows 8.1 but I notice the start up was different on the default start up that I bought my laptop! it was set on UEFI now its on Legacy Bios! I tried to change it to UEFI I got this Message "Operating System not found" ?

Best Answer

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer
    Answer ✓

    it's correct, since you installed Windows with Legacy enabled and now can boot only on Legacy mode.

     

    to use UEFI you need to install Windows 8 with UEFI enabled.

    I'm not an Acer employee.

Answers

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer

    You can't switch between UEFI to Legacy after OS installation, so it's better if you set back UEFI and re-isntall windows 8 (that fully support UEFI boot).

    I'm not an Acer employee.
  • nadfyv
    nadfyv Member Posts: 42 New User

    but when I switch to UEFI I got this "Operating System Not Found" I cant boot to my windows and stuck! Smiley Sad I set back to Legacy Bios it reads the OS!

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer
    Answer ✓

    it's correct, since you installed Windows with Legacy enabled and now can boot only on Legacy mode.

     

    to use UEFI you need to install Windows 8 with UEFI enabled.

    I'm not an Acer employee.
  • nadfyv
    nadfyv Member Posts: 42 New User

    but how can I install windows 8 with UEFI enabling ?

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer

    What do you have to install windows 8?

    DVD

    USB

    Acer Recovery partition

    I'm not an Acer employee.
  • nadfyv
    nadfyv Member Posts: 42 New User

    I have DVD Smiley Happy

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer
    And if you put the DVD in the reader, set UEFI, press F12 at boot, select DVD as boot device, you are not able to install it?
    I'm not an Acer employee.
  • nadfyv
    nadfyv Member Posts: 42 New User

    I never tried that: what I did press F2 then change to UEFI dvd set first on boot, then boot up I got this "Operating System Not Found" I would like u try what you said but I got everything set on Legacy Bios! I guess theirs nothing wrong about setting you windows 8.1 to legacy bios

     

    If I set that UEFI ? ill be formating my laptop again ?

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer

    You can switch without reformatting but is not an easy task, so i suggest you to reinstall.

    If your system is stable, stay on legacy.

    I'm not an Acer employee.
  • nadfyv
    nadfyv Member Posts: 42 New User

    thanks! Cat Happy