time machine back up

Discussion in 'MacBook Pro' started by cindyjj, Dec 30, 2015.

  1. cindyjj macrumors regular

    Joined:
    Mar 29, 2014
    #1
    I purchased a Seagate Backup Plus Slim back up 1 TB for windows and Mac. I have a Macbook Pro late 2011. I plugged it in and went to time machine to begin the backup and it indicated that the disk was not usable because it needed to be formated? How do I do this?
     
  2. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
  3. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #3
    New drives come formatted for PCs so out of the box you need to set the partition type and format for the mac.
    In the Disk Utility Partition Scheme pop-up menu, choose "GUID Partition Scheme".
    Then choose HFS+ as format type of Mac OS Extended (Journaled).
     

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