Unable to delete High Sierra partition from Sierra partition

Discussion in 'macOS Sierra (10.12)' started by xWhiplash, Aug 7, 2017.

  1. xWhiplash macrumors 65816

    Joined:
    Oct 21, 2009
    #1
    Hello,

    I wasn't sure if I should put this in High Sierra sub-forum or here. So I installed the beta of High Sierra to diagnose some issue I had with my new iMac. I am unable to delete the High Sierra partition from inside Sierra. When I select the partition, the minus button is grayed out. Is this a known issue? Is there anything I can do to fix it other than wiping the drive and starting all over?

    Thanks.
     
  2. Tech198 macrumors G4

    Joined:
    Mar 21, 2011
    Location:
    Australia, Perth
    #2
    I think so,,,,, when i did mine and trashed High Sierra on a dual partition on my Mac mini, instead of using the button, just use the pie chart to expand one, or shrink the other...

    That still works... but i had that same experience on mine as well.
     
  3. xWhiplash thread starter macrumors 65816

    Joined:
    Oct 21, 2009
    #3
    I tried that. I was not able to shrink the High Sierra partition. I could shrink my Sierra partition, but that is not what I want to do.
     
  4. Tech198 macrumors G4

    Joined:
    Mar 21, 2011
    Location:
    Australia, Perth
    #4
    Did you try and remove from main partition ?

    Here's mine:

    In this case High Sierra partition is selected and then the hyphen should be visible. Do this from Sierra? not High Sierra... as you cannot remove partition you are booted into.
     

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  5. xWhiplash thread starter macrumors 65816

    Joined:
    Oct 21, 2009
    #5
    No partitions can be deleted. I selected them all and looked at the minus button and it was grayed out for all partitions.
     

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