Resolved How do I add back a partition to the Fusion Drive

Discussion in 'macOS' started by milomak, Apr 5, 2018.

  1. milomak macrumors member

    Apr 25, 2010
    I experienced a power failure when I was in Bootcamp. When I rebooted againI noticed I could not boot into Bootcamp. But I could access the Bootcamp partition in in Finder and be able to work on files.

    So when I went to Disk Utility, I noticed that it states the size of the Fusion Drive as being just bigger than macOS install and completely disregards the Bootcamp partition

    Screen Shot 2018-04-05 at 20.09.31.png

    diskutil cs list
    CoreStorage logical volume groups (1 found)
    +-- Logical Volume Group DD388015-1FFF-4831-9CF2-9CD8367E2742
        Name:         iMac
        Status:       Online
        Size:         826852675584 B (826.9 GB)
        Free Space:   749568 B (749.6 KB)
        +-< Physical Volume 1CA5E61B-C026-4CF8-8AF4-B7DF7F5F22D2
        |   ----------------------------------------------------
        |   Index:    0
        |   Disk:     disk1s2
        |   Status:   Online
        |   Size:     120338849792 B (120.3 GB)
        +-< Physical Volume 8E14E744-451B-416F-A1BB-381DAE3E02EA
        |   ----------------------------------------------------
        |   Index:    1
        |   Disk:     disk0s2
        |   Status:   Online
        |   Size:     706513825792 B (706.5 GB)
        +-> Logical Volume Family 1D47764C-26B0-4C36-93A7-323A023C19A6
            Encryption Type:         None
            +-> Logical Volume 94350E47-4BD3-48A2-B9DC-454AACAF0083
                Disk:                  disk2
                Status:                Online
                Size (Total):          821000273920 B (821.0 GB)
                Revertible:            No
                LV Name:               Macintosh HD
                Volume Name:           Macintosh HD
                Content Hint:          Apple_HFS
                LVG Type:              Fusion, Sparse
    $ diskutil list
    /dev/disk0 (internal, physical):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *2.0 TB     disk0
       1:                        EFI EFI                     209.7 MB   disk0s1
       2:          Apple_CoreStorage iMac                    706.5 GB   disk0s2
       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
       4:       Microsoft Basic Data BOOTCAMP                1.3 TB     disk0s4
    /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 iMac                    120.3 GB   disk1s2
       3:                 Apple_Boot Boot OS X               134.2 MB   disk1s3
       4:                  Apple_HFS Boot OS X               134.2 MB   disk1s4
       5:           Linux Filesystem boot                    73.4 MB    disk1s5
       6:           Linux Filesystem                         440.4 MB   disk1s6
    /dev/disk2 (internal, virtual):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:                  Apple_HFS Macintosh HD           +821.0 GB   disk2
                                     Logical Volume on disk1s2, disk0s2
                                     Unencrypted Fusion Drive
    What command do I need to issue to add the Bootcamp partition back into Fusion Drive?
  2. milomak thread starter macrumors member

    Apr 25, 2010
    If anyone is running Bootcamp, could you post your diskutil cs list and diskutil list please
  3. milomak, May 1, 2018
    Last edited: May 1, 2018

    milomak thread starter macrumors member

    Apr 25, 2010

    That is to say i can boot into my Windows again.

    It seems though diskutil (maybe by default?) doesn't pick up the BOOTCAMP partition as part of the logical drive

    Anyway,the most important thing I was able to boot my BOOTCAMP/Windows partition after it was gone/lost/ disappeared from the boot options

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