Windows 10: How do I enlarge EFI System Partition?

  1.    05 Sep 2016 #1

    How do I enlarge EFI System Partition?


    Click image for larger version. 

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    Look at the picture! What I want is simple, 100 mb is too small for EFI and I just want to make it 1GB. See that unallocated space in colored grey box, I want to move that near the EFI System Partition so that I could merge it. But now the problem is I can't because of Microsoft Reserved Partition which now left me with only
    1) Move MSR by Cloning then delete or
    2) Move EFI system partition by Cloning then delete

    Which one do you think should I take? or perhaps there is another way of doing it?
      My ComputerSystem Spec


  2. Posts : 2,033
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       05 Sep 2016 #2

    What make you think that 100MB is too small ? Basically this partition only contains BCD to boot Windows, only 34MB used.
    However, it is easier to use Macrium Reflect Free to get it done
      My ComputerSystem Spec

  3.    06 Sep 2016 #3

    I agree with topgundcp, the EFI partition is normally large enough. If you boot another OS, like Ubuntu it adds more to the directory structure but the files are not large. Microsoft does recommend the partition be 260 MB for a 4 K drive.

    Warning
    For Advanced Format 4K Native drives (4-KB-per-sector) drives, the minimum partition size is 260 MB, due to a limitation of the FAT32 file format. The minimum partition size of FAT32 drives is calculated as sector size (4KB) x 65527 = 256 MB. For more information, see Configure UEFI/GPT-Based Hard Drive Partitions.
    https://msdn.microsoft.com/windows/h...and-partitions

    The MSR partition can be deleted and recreated with Diskpart, just leave enough room for it after you expand the EFI System partition.
      My ComputerSystem Spec

  4.    06 Sep 2016 #4

    topgundcp said: View Post
    What make you think that 100MB is too small ? Basically this partition only contains BCD to boot Windows, only 34MB used.
    However, it is easier to use Macrium Reflect Free to get it done
    Saltgrass said: View Post
    I agree with topgundcp, the EFI partition is normally large enough. If you boot another OS, like Ubuntu it adds more to the directory structure but the files are not large. Microsoft does recommend the partition be 260 MB for a 4 K drive.

    https://msdn.microsoft.com/windows/h...and-partitions

    The MSR partition can be deleted and recreated with Diskpart, just leave enough room for it after you expand the EFI System partition.


    I want to boot hackintosh. and Clover doesn't fit in there.
      My ComputerSystem Spec

  5.    06 Sep 2016 #5

    topgundcp said: View Post
    What make you think that 100MB is too small ? Basically this partition only contains BCD to boot Windows, only 34MB used.
    However, it is easier to use Macrium Reflect Free to get it done
    Clover doesn't fit in there. I want to install hackintosh in my system

    Okay. I've downloaded it. Now, How do I do it? what is the correct way to do it? Just plainly making disk image in the adjacent side then delete the original one?
      My ComputerSystem Spec


 

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