Hidden "Boot OS X" partition, what does it do?

Discussion in 'OS X Mountain Lion (10.8)' started by kot, Oct 19, 2012.

  1. kot macrumors regular

    Joined:
    Sep 10, 2011
    #1
    [​IMG]

    What does this thing do? I cannot see it in the Finder and I'm wondering what it is for. Might it be some kind of malware disguising itself as a legitimate piece of OS X code.
     
  2. mrapplegate, Oct 19, 2012
    Last edited: Oct 19, 2012

    mrapplegate macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #2
    It should be the recovery partition. Nothing to worry about.
    http://support.apple.com/kb/HT4718

    Wait, it's only 35MB, it can't be the recovery partition. I'm not sure now. I don't run BootCamp so I don't know how those look in Disk Utility. Do you use it? Is Boot OS X used to boot into Windows?
     
  3. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    There is no Mac OS X malware in the wild that creates a separate partition. It is not a malware issue. It looks like either a partition was created, possibly for backup purposes, or the OS X Recovery partition was renamed. Have you looked at the contents to see what's there?
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    You are not alone. It appears to be a new boot EFI partition on the Time Machine disk added with 10.8.2.

    Maybe Apple is getting ready to give up a true, bootable Time Machine disk?
     

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