Cannot partition all free space

Discussion in 'macOS High Sierra (10.13)' started by madgick, May 18, 2018.

  1. madgick macrumors newbie

    Jan 11, 2008
    I have about 200GB free space, but when I try to partition using Disk Utility, it will only let me use about 51GB of that space:


    As you can see, my little slice of pie wont extend further into the 448GB area, even though in the bottom right it says only 311.13GB is being used

    Any ideas what could be going wrong?
  2. organicCPU macrumors 6502a


    Aug 8, 2016
    Can you click on Untitled and press the minus sign?
  3. nudoru macrumors regular

    Feb 27, 2012
    I have this same issue, but I can't create a new partition larger than 28gb. Did you solve it?
    --- Post Merged, May 29, 2018 ---
    Found the solution!

    Local time machine backups are causing it. You need to turn them off and delete all local snapshots. After that, you'll be able to resize it and create a new partition. Be sure to turn TM back on afterwards.

    Refer to this

    That deleted all but 1 snapshot for me, I had to remove the last one manually using the solution here

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