Mismatch between the MBR and GPT partition maps

Discussion in 'OS X El Capitan (10.11)' started by kaicrawf, Jul 10, 2015.

  1. kaicrawf macrumors newbie

    Joined:
    Jan 31, 2015
    Location:
    United Kingdom
    #1
    When trying to install El Cap I get the error message: "A mismatch between the MBR and GPT partition maps is not supported with this operation."

    I tried re-installing but the same message came up.

    I do have a Windows 7 Bootcamp partition if that is any issue and I checked my Disk Utility and the 'Partition Map Scheme' is: GUID Partition Table if that is any help at all

    Any advice is appreciated! :)
     
  2. !!! macrumors 6502

    !!!

    Joined:
    Aug 5, 2013
    #2
    Boot Camp uses a "hybrid" partition scheme, but disk utility doesn't show that.
    Click on the main disk, not partition in Disk utility. It should be something like "TOSHIBA SERIAL#" then click verify and it should verify the entire disk (including the partition scheme.
     

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