Installing Mavericks. Question about disk2 and disk3.

Discussion in 'OS X Mavericks (10.9)' started by thiagos, Oct 21, 2013.

  1. thiagos macrumors 6502

    thiagos

    Joined:
    Dec 20, 2007
    Location:
    NYC (Manhattan)
    #1
    I am doing a clean install of Mavericks. When formatting the hard drive under disk utilities (booted the computers, held ALT and selected the flash drive), I see disk2 (OS X Install ESD) and disk3 (OS X Base System). I have tried delete both partitions through terminal prior to starting the drive format and it would not allow me to delete it.

    I know Mountain Lion had a separate hidden partition of the OS on your drive but Mavericks seems to have two. Is there a way to delete those two partitions and/or is it normal that Mavericks requires those two hidden partitions to fully operate? I just want to make sure I don't have both Mountain Lion's and Mavericks restore partitions taking space on my drive.

    Thanks in advance.
     
  2. Bear macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #2
    Are you sure those partitions weren't on your flash drive?
     
  3. thiagos thread starter macrumors 6502

    thiagos

    Joined:
    Dec 20, 2007
    Location:
    NYC (Manhattan)
    #3
    I tried removing the flash drive but I get the beach ball and disk utility freezes. So I guess it might be on the flash drive.
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    Those are definitely on the flash drive.
     
  5. thiagos thread starter macrumors 6502

    thiagos

    Joined:
    Dec 20, 2007
    Location:
    NYC (Manhattan)
    #5
    Thanks. I appreciate that you took your time to answer.
     
  6. tgd85 macrumors member

    Joined:
    Sep 18, 2013
    #6
    I've had a similar experience. I did a clean install over the weekend using a newly created DIY fusion drive with an SSD and HDD. Both drives were formatted and repartitioned.

    It looks like Mavericks created 3 partitions on each drive: (1) EFI (2) usable partition (3) Boot OSX. The size of these partitions differ between drives.

    The Boot OSX partition on the SSD drive is ~250 mbs, while the HDD also has a Boot OSX partition but is ~650 mbs.
     

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