Erase Tab is missing in Disk Utility

Discussion in 'OS X Mountain Lion (10.8)' started by ezabran, Feb 8, 2014.

  1. ezabran macrumors newbie

    Joined:
    Feb 8, 2014
    #1
    Hi Guys. I'm trying to do a raid using 2 3T HD's.
    But one of these can't be used. So I tried reformat, but now the erase tab is missing. How can I solve this?
    Thank you.
     

    Attached Files:

  2. MacUser2525 macrumors 68000

    MacUser2525

    Joined:
    Mar 17, 2007
    Location:
    Canada
    #2
    Well the partition tab is there so use that to create a new single partition layout which will give you the option to put a file system on it at the same time.
     
  3. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #3
    It is because the Trabalho volume is not a physical disk it is a logical volume group. Run the command below in Terminal and post up the output and we can help you sort things out.

    Code:
    diskutil cs list
     

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