Multiple EFI partitions on the same drive


  1. robo731
    Posts : 16
    Windows 10
       New #1

    Multiple EFI partitions on the same drive


    I currently have one 100MB EFI partition and I use grub to boot Windows 10, Manjaro, and Arch. I'm going to be installing macOS which requires a 200MB EFI partition. I have read though, that Windows may have issues with there being more than one EFI partition on a given disk, but I couldn't find anything specific on it.

    Can anyone substantiate or refute that claim?
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  3. bro67
    Posts : 9,788
    Mac OS Catalina
       New #2

    Each OS requires its own EFI/Boot Partition. Windows on the other hand, only wants one EFI partition, regardless of how many OS’s are installed.
    Last edited by bro67; 08 Feb 2019 at 17:24.
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  4. robo731
    Posts : 16
    Windows 10
    Thread Starter
       New #3

    Are you sure? Right now I have Windows and my Linux Distros sharing the same EFI partition, but they are all in their own folders of course. But are you saying that I can create a second EFI partition on the same drive without causing any problems with Windows?
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  6. bro67
    Posts : 9,788
    Mac OS Catalina
       New #4

    Yes. Each OS should have its own EFI partition in a perfect world.
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  7. robo731
    Posts : 16
    Windows 10
    Thread Starter
       New #5

    Ok, cool. That's good news. I'll give it a try then.
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