Macbook Pro Retina - Partition Problem

Discussion in 'MacBook Pro' started by hirtaza, Oct 1, 2014.

  1. hirtaza macrumors member

    hirtaza

    Joined:
    Apr 20, 2014
    Location:
    Toronto
    #1
    Hi, I wanted to re-install the newly released yosemite beta and when I went to partition my hard drive it is giving me this error (attached image below), I've installed yosemite / partitioned my hard drive a lot of times before, never ran into this problem. This is my first mac so I'm not sure as to what happened and why its giving me this error. Thank you for all your help in advance
     

    Attached Files:

  2. hirtaza thread starter macrumors member

    hirtaza

    Joined:
    Apr 20, 2014
    Location:
    Toronto
  3. BasicGreatGuy Contributor

    BasicGreatGuy

    Joined:
    Sep 21, 2012
    Location:
    In the middle of several books.
    #3
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    A Yosemite install on a second partition converts the partition to a core storage volume and causes the issue you are seeing.

    Enter the command below in Terminal and it will turn off the core storage and allow you to manipulate the partitions normally.

    Code:
    diskutil cs revert disk1
     

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