Where's my EFI partition in Disk Utility?

Discussion in 'Windows, Linux & Others on the Mac' started by Dinkhart, Feb 27, 2017.

  1. Dinkhart macrumors newbie


    Feb 27, 2017
    Just installed Ubuntu on a 24GB partition which I made in Disk Utility on my MB Air, running Sierra. My intention is to dual boot. Now that Ubuntu is installed and working properly on its own partition, the partition doesn't show up in Sierra's DU. I assume this has something to do with the way Ubuntu formatted the partition during installation. I'd like to be able to access this partition from macOS - is there a way to either get DU to recognize the partition, or at least to interact with the partition somehow? Most importantly, have I screwed something up?
  2. Shirasaki macrumors 603


    May 16, 2015
    Ubuntu won't use any Apple proprietary file system so you might need a third party driver to access it. I don't remember ubuntu supports HFS+.
  3. MacUser2525 macrumors 68000


    Mar 17, 2007
    Open Terminal ( in the Applications=> Utilities folder) then.

    MacUser2525:~$ diskutil list
    /dev/disk0 (internal, physical):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *480.1 GB   disk0
       1:                        EFI EFI                     209.7 MB   disk0s1
       2:                 Apple_RAID                         30.0 GB    disk0s2
       3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3
       4:                 Apple_RAID                         449.6 GB   disk0s4
       5:                 Apple_Boot Boot OS X               134.2 MB   disk0s5
    MacUser2525:~$ diskutil mount /dev/disk0s1
    Volume EFI on /dev/disk0s1 mounted
    The first command list the disks in the machine there you will see the EFI partition by default Disk Utility hides this information from you. The second mounts the partition so you can use it when done changing the mount to unmount in the command will make it not show up again by unmounting it from the OS/Desktop.

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