Hard Drive Partition Issues

Discussion in 'macOS Sierra (10.12)' started by jakofharts7, Nov 14, 2016.

  1. jakofharts7 macrumors newbie

    Joined:
    Aug 14, 2010
    #1
    Hello all,

    I have a late-2012 iMac with a 3TB Fusion Drive. A couple of days ago, I decided to back up everything and install a fresh copy of macOS. My system shipped with Mountain Lion and I had done in-place upgrades for 4 releases and decided to wipe everything and start over. I have a functioning install of macOS Sierra on my system now, but am scared I might have done something wonky with my HD. In Disk Utility, I see my HD with 2 partitions a 337GB BOOTCAMP partition which I set up, and a 2.77TB Macintosh HD partition. Everything looks OK.

    However, when I run diskutil list, I see that something doesn't look quite right.

    /dev/disk0 (internal, physical):

    #: TYPE NAME SIZE IDENTIFIER

    0: GUID_partition_scheme *3.0 TB disk0

    1: EFI EFI 209.7 MB disk0s1

    2: Apple_CoreStorage Macintosh HD 1.9 TB disk0s2

    3: Apple_Boot Recovery HD 650.1 MB disk0s3

    4: Microsoft Basic Data BOOTCAMP 338.1 GB disk0s4

    5: Apple_CoreStorage Macintosh HD 801.4 GB disk0s5

    6: Apple_Boot Boot OS X 134.2 MB disk0s6


    /dev/disk1 (internal, physical):

    #: TYPE NAME SIZE IDENTIFIER

    0: GUID_partition_scheme *121.3 GB disk1

    1: EFI EFI 209.7 MB disk1s1

    2: Apple_CoreStorage Macintosh HD 121.0 GB disk1s2

    3: Apple_Boot Boot OS X 134.2 MB disk1s3


    /dev/disk2 (internal, physical):

    #: TYPE NAME SIZE IDENTIFIER

    0: FDisk_partition_scheme *31.9 GB disk2

    1: Windows_FAT_32 SDCARD 31.9 GB disk2s1


    /dev/disk3 (internal, virtual):

    #: TYPE NAME SIZE IDENTIFIER

    0: Macintosh HD +2.8 TB disk3

    Logical Volume on disk1s2, disk0s2, ...

    D6807E65-EF0C-49CD-9C8D-08BF8557E678

    Unencrypted Fusion Drive


    /dev/disk4 (external, physical):

    #: TYPE NAME SIZE IDENTIFIER

    0: FDisk_partition_scheme *15.5 GB disk4

    1: Apple_HFS Install macOS Sierra 15.5 GB disk4s1


    /dev/disk5 (external, physical):

    #: TYPE NAME SIZE IDENTIFIER

    0: GUID_partition_scheme *3.0 TB disk5

    1: EFI EFI 314.6 MB disk5s1

    2: Apple_HFS Seagate Backup+ 3.0 TB disk5s2


    /dev/disk6 (disk image):

    #: TYPE NAME SIZE IDENTIFIER

    0: Apple_partition_scheme +100.7 MB disk6

    1: Apple_partition_map 32.3 KB disk6s1

    2: Apple_HFS DiskDrill 100.7 MB disk6s2


    I see two Macintosh HD partitions listed, one at 1.9TB and one at 801.4GB. I'm also unsure why I have a Apple_Boot Recovery HD and a Apple_Boot Boot OS X partition. Should both of these be present?

    Does this diskutil look out of the ordinary? I'm unsure if I have a problem I need to look into fixing, or if there is a normal explanation why I have two Macintosh HD partitions listed.

    Thanks in advance for any help anyone can provide.
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Nothing is wrong. You have physical disks 0 and 1 combined into the Fusion drive virtual disk3. Totally normal Fusion setup.
     

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