Windows 10: Win 10 pro MBR TO GPT

Discus and support Win 10 pro MBR TO GPT in Windows 10 Installation and Upgrade to solve the problem; I,m sorry if this has been posted before . I managed to secure erase my Samsung evo 850 m.2 250GB SSD then reinstalled windows using the official... Discussion in 'Windows 10 Installation and Upgrade' started by tamo, Jul 14, 2017.

  1. TAMO
    tamo Win User

    Win 10 pro MBR TO GPT


    I,m sorry if this has been posted before .

    I managed to secure erase my Samsung evo 850 m.2 250GB SSD then reinstalled windows using the official Microsoft tool . I don't know how but the disc is now MBR so wont allow me to use secure boot UEFI . I understand that the disc needs to be GPT to boot from UEFI settings . How do I convert the disc to GPT . I don't mind a reinstallation as I have a full back up of personal files .

    Thanks

    :)
     
    tamo, Jul 14, 2017
    #1
  2. AKSHAY CHIRMADE
    Akshay Chirmade Win User

    Windows 10 crashing

    Any way I'm. Reinstalling win 8.1 pro now.

    Si how to convert Mbr to gpt.

    in cmd
     
    Akshay Chirmade, Jul 14, 2017
    #2
  3. SLANCE310
    slance310 Win User
    How to restore or convert an mbr system image to gpt format

    Hi,

    Are you talking about TWO instances of Win 10 running, or are you wanting to overwrite the Win 10 GPT partition with the MBR Image ?...

    Loading the MBR image onto the GPT partition might work without any issues, but there may be some... The GPT installation probably uses a EFI partition and "Windows Boot Manager" to boot... the MBR installation does not...

    If it does not, a Startup Repair may resolve the problem...

    I have had mixed success switching between MBR and GPT installations of Win 10...

    Depending on how you created the System Image, it may refuse to load onto a GPT drive... The Windows imaging method is pretty finicky about stuff like that...
     
    slance310, Jul 14, 2017
    #3
  4. COUNTMIKE
    CountMike New Member

    Win 10 pro MBR TO GPT

    CountMike, Jul 14, 2017
    #4
  5. TAMO
    tamo Win User
    Had a look at your link and I,m sure the options would work for some . I decided to go back into my BIOS and found that I had the wrong settings . I had legacy enabled , UEFI and secure boot disabled so when the system found the USB boot disc it must have formatted the drive MBR . Changed back to UEFI and secure boot and made the first boot device USB . At set up I deleted the drive and re-created anew s imple volume and reformatted and the installation went ahead creating some system partitions and I had my GPT drive back .

    Thanks for your help
     
    tamo, Jul 14, 2017
    #5
  6. COUNTMIKE
    CountMike New Member
    Good thing you could afford to do it like that. I had invested to much time with setting up windows and programs so hade to do it in place.
     
    CountMike, Apr 4, 2018
    #6
Thema:

Win 10 pro MBR TO GPT

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