Windows 10: Help: Formatted EFI partition on dual OS install

Discus and support Help: Formatted EFI partition on dual OS install in Windows 10 Ask Insider to solve the problem; I wanted to fresh install my Pop OS alongside windows so burned an iso and checked to format my old pop os installation. I accidentally checked the... Discussion in 'Windows 10 Ask Insider' started by /u/bprayush, Oct 25, 2020.

  1. /U/BPRAYUSH
    /u/bprayush Win User

    Help: Formatted EFI partition on dual OS install


    I wanted to fresh install my Pop OS alongside windows so burned an iso and checked to format my old pop os installation. I accidentally checked the format EFI partition too. Now I am unable to boot to windows. Any help is appreciated.

    submitted by /u/bprayush
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    :)
     
    /u/bprayush, Oct 25, 2020
    #1
  2. OMKESH DWIVEDI
    Omkesh Dwivedi Win User

    Formatted EFI partition

    Hello,

    I have tried to dual boot my pc and it worked.But by mistake I formatted my EFI partition and so I can only boot into android marshmallow please help so that I can use my Windows 10 too.
     
    Omkesh Dwivedi, Oct 25, 2020
    #2
  3. SALTGRASS
    Saltgrass Win User
    Formating Efi system partition as FAT32

    During an install you can remove all the critical partitions, of which the EFI System partition is one. You do not have to pre-format a drive during an install. Just remove the Critical partitions ( MSR, EFI, Recovery and OS)and leave unallocated space.
    The install will take care of the rest.

    You can delete the partition and use the Diskpart create partition EFI command with qualifiers, if necessary. If you have already created the partition, try using Diskpart from a command prompt (Shift+F10 during the install) and format.

    If you need to convert a drive from MBR to GPT or vice versa, you need to remove ALL partitions.
     
    Saltgrass, Oct 25, 2020
    #3
  4. ANEEKHAIT
    AneekHait Win User

    Help: Formatted EFI partition on dual OS install

    Reinstalling Windows: Windows detected that the EFI system partition was formatted as NTFS. Format the EFI system partition as FAT32, and restart the installation.

    Just format the system partition and you will be good to go!!
     
    AneekHait, Oct 25, 2020
    #4
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Help: Formatted EFI partition on dual OS install

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