Windows 10: Windows 10 installed on MBR instead of GPT

Discus and support Windows 10 installed on MBR instead of GPT in Windows 10 Installation and Upgrade to solve the problem; Hi there, I have a 4TB hard disk and I didn't realize I installed Windows 10 on a MBR which partitioned/divided my HDD to 2TB. I have lots of empty... Discussion in 'Windows 10 Installation and Upgrade' started by Coouge, Aug 8, 2015.

  1. COOUGE
    Coouge Win User

    Windows 10 installed on MBR instead of GPT


    Hi there,

    I have a 4TB hard disk and I didn't realize I installed Windows 10 on a MBR which partitioned/divided my HDD to 2TB. I have lots of empty blu-ray disc that I can use. Is it possible for me to create a system image of Windows 10, format the hard disk and convert it to GPT and then reinstall Windows 10? Would that work?

    :)
     
    Coouge, Aug 8, 2015
    #1
  2. 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, Aug 8, 2015
    #2
  3. JON-STARK
    Jon-Stark Win User
    3TB Drive format windows 10 not working

    This is because your hard disk is MBR disk, you can check it in Disk Management.
    which only supports 2 TB drive. so the only way to get your space backup is to convert your disk back to GPT disk. Disk management can only convert a disk to MBR when it is empty. Therefore, you need a third party software to

    convert MBR to GPT on Windows 10     without affecting the OS, such as AOMEI Partition Assistant.after installing this software, the Convert mBR/GPT wizard will guide you through the process. How to Convert GPT to MBR or Convert MBR to GPT without Losing Data?
     
    Jon-Stark, Aug 8, 2015
    #3
  4. ZTRUKER
    Ztruker Win User

    Windows 10 installed on MBR instead of GPT

    Ztruker, Aug 10, 2015
    #4
  5. BOBKN
    bobkn Win User
    I'm missing the point.

    Why not just re-install Win 10? Have you installed a ton of stuff since 29 July?

    I'm not certain that it'll re-activate if the installation goes from MBR to GPT, but I'd bet that it will.
     
    bobkn, Aug 10, 2015
    #5
  6. COOUGE
    Coouge Win User
    Yeah that's what I did Windows 10 installed on MBR instead of GPT :p Everything's fine now. Thanks!
     
    Coouge, Apr 4, 2018
    #6
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Windows 10 installed on MBR instead of GPT

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