Windows 10: How do I switch from Legacy BIOS to UEFI?

Discus and support How do I switch from Legacy BIOS to UEFI? in Windows 10 Installation and Upgrade to solve the problem; Hello everyone, I recently had an issue with my Sony Vaio SVJ202A11L where the config files were corrupted and decided that a clean install of Windows... Discussion in 'Windows 10 Installation and Upgrade' started by kelsey, Feb 14, 2020 at 12:17 AM.

  1. kelsey Win User

    How do I switch from Legacy BIOS to UEFI?


    Hello everyone,
    I recently had an issue with my Sony Vaio SVJ202A11L where the config files were corrupted and decided that a clean install of Windows 10 was the best option. My device was using UEFI at the time and from the UEFI firmware UI I set the boot order to external device then hard drive in order to boot Windows from a Flash Drive. The OS wouldn't boot, however, and so I set the BIOS mode to Legacy (per something I read randomly on the internet). Everything booted after that and after deleting the old hard drive partitions and creating new ones with a MBR format, windows installed itself no problem. However, I'd like to switch back to UEFI. I tried using Windows MBR2GPT.exe and... the partitions reformatted but then I restarted the computer and the Legacy BIOS could no longer read the hard drive and went looking for an external drive and screaming "No Operating System Found_". I then did the whole thing over and installed Windows once more. I don't know where to go from here. I've read article after article on how to resolve this issue but while I can format drives and partitions just fine, how on earth to I switch back to UEFI?

    :)
     
  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
     
  3. dac81048 Win User
    Problem Regarding Bios Change from UEFI to Legacy

    I have hp pavilion p045tx with windows 10 pro. I recently install Ubuntu with windows 10 so for that I convert my bios setting from UEFI to Legacy mode for install third party software like wireless Driver and all in Ubuntu.
    But after every restart the bios setting change to default and that is to UEFI mode and that will cause an problem of no OS detect. Every time I have to go to bios setting and enable the legacy mode to start my OS. Can anyone suggest me what to do in this
    case.
     
  4. Ramuettan Win User

    How do I switch from Legacy BIOS to UEFI?

    Return to Legacy from UEFI - BIOS

    Hi There

    A while ago I was helped here to change from Legacy to UEFI. However, since then it seems, the Laptop (Latutide E6420) is running a bit slowly which was otherwise very quick until then. Now, it takes nearly a minute or so to boot up or shut down or even
    to close a file. Just a couple of days ago, I updated the latest BIOS for this machine recommended by Dell.

    I tried to go back to Legacy but the system was asking me to reset to UEFI or face boot problems. One advise said that I could disable 'Secure Boot' in Boot Manager and reset to Legacy. However, the Boot Manager is listed under UEFI Boot process and it only
    starts Windows. Is there any way as easy as I changed it? This is absolutely under the hope that all will be as normal as it was in the beginning. Please give your thoughts and advice. Thanks.
     
Thema:

How do I switch from Legacy BIOS to UEFI?

Loading...
  1. How do I switch from Legacy BIOS to UEFI? - Similar Threads - switch Legacy BIOS

  2. How do I switch from Legacy BIOS to UEFI?

    in Windows 10 Support
    How do I switch from Legacy BIOS to UEFI?: Hello everyone, I recently had an issue with my Sony Vaio SVJ202A11L where the config files were corrupted and decided that a clean install of Windows 10 was the best option. My device was using UEFI at the time and from the UEFI firmware UI I set the boot order to external...
  3. how to change from uefi to LEGACY BIOS on imac 2011 with windows 10?

    in Windows 10 Drivers and Hardware
    how to change from uefi to LEGACY BIOS on imac 2011 with windows 10?: I have windows 10 on my mid 2011 imac 21.5" computer. Every driver is working perfectly except for the sound drivers. I am told that the reason for this is because i downloaded windows through a efiboot, instead of a bios boot. I was wondering how i can change my boot from...
  4. Convert Mid-2011 iMac from UEFI to Legacy BIOS.

    in Windows 10 Drivers and Hardware
    Convert Mid-2011 iMac from UEFI to Legacy BIOS.: Hello! I have a mid-2011 iMac with which I am dual booting windows 10 and macOS high sierra. Since it is not compatible with bootcamp, I made a bootable usb drive and used that instead. This all worked very well except for that Windows does not recognize my sound card. I...
  5. Back from UEFI to Legacy

    in Windows 10 Customization
    Back from UEFI to Legacy: Hello, How we can back from UEFI to Legacy Bios? Just we need to change BIOS setting? or we need to change some setting in WinRE? Thanks https://answers.microsoft.com/en-us/windows/forum/all/back-from-uefi-to-legacy/e4f4fea1-fe1b-49d0-b70c-433c198dc55d
  6. BIOS mode as Legacy or UEFI?

    in Windows 10 Installation and Upgrade
    BIOS mode as Legacy or UEFI?: My Windows 10 says its BIOS mode is Legacy with C drive partition as MBR. Is it worth switching to UEFI mode with C drive as GPT partition? Why does it seem so difficult to install to UEFI mode with GPT partition? You do not get an option to choose when you install windows 10...
  7. How do i switch the firmware to BIOS from EFI?

    in Windows 10 BSOD Crashes and Debugging
    How do i switch the firmware to BIOS from EFI?: When trying to restore windows after a crash I get the error message "This PC is running EFI and the PC that created the restore ran on BIOS" this is after of course trying to salvage my situation a myriad of other ways, is it as simple as switching the firmware and if so how...
  8. I changed from Legacy BIOS to UEFI to boot from a USB and I have the "Reboot and Select...

    in Windows 10 BSOD Crashes and Debugging
    I changed from Legacy BIOS to UEFI to boot from a USB and I have the "Reboot and Select...: Hi, Long story short, my computer won't boot anymore, I've got the infamous "Reboot and Select proper Boot device" message after I changed from Legacy Bios to UEFI. The long story is that I bought a new SSD drive, I wanted to run my OS from the new drive (as opposed to...
  9. Changing from Legacy Bios to UEFI, settings in bios and Windows 10

    in Windows 10 Installation and Upgrade
    Changing from Legacy Bios to UEFI, settings in bios and Windows 10: I used the Windows converting program MBR2GPT.exe to convert my SSD to GPT and it reported it had done it. I then rebooted and entered the bios and changed one setting from Legacy ROM to EFI Compatible ROM and another setting called 'UEFI Boot' from Disabled to Enabled and...
  10. EFI, UEFI, Legacy BIOS.......

    in Windows 10 Installation and Upgrade
    EFI, UEFI, Legacy BIOS.......: This weekend I will try to do a clean install of Win 10 again, from Win 7. Have to try som new methods to see if I can get my computer running flawlessly with Windows 10. I will use the clean install tutorials from this forum. I hav two options, with or without UEFI...