Jerome Tremblay

Q: Unable to reformat/repartition Fusion Drive

I created a fusion drive on my system but it somehow bot corrupted.

 

Now I am unable to reformat or repartition the whole thing.

 

> diskutil cs list

 

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 40B334F6-6988-4727-9A2B-48E7999F4047

    =========================================================

    Name:         MacintoshHD

    Size:         558926610432 B (558.9 GB)

    Free Space:   135995392 B (136.0 MB)

    |

    +-< Physical Volume AC91E9F8-CAAA-48B9-A000-93E559F5D2DD

    |   ----------------------------------------------------

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     59162722304 B (59.2 GB)

    |

    +-< Physical Volume 1319D374-879E-418F-88EF-5AA163B4105C

    |   ----------------------------------------------------

    |   Index:    1

    |   Disk:     disk1s2

    |   Status:   Online

    |   Size:     499763888128 B (499.8 GB)

    |

    +-> Logical Volume Family 3E85E6B1-4E99-4CBD-A34E-E720A090F373

        ----------------------------------------------------------

        Encryption Status:       Unlocked

        Encryption Type:         None

        Conversion Status:       NoConversion

        Conversion Direction:    -none-

        Has Encrypted Extents:   No

        Fully Secure:            No

        Passphrase Required:     No

        |

        +-> Logical Volume 76A3020B-B3C2-4905-9E09-2EBB5470261C

            ---------------------------------------------------

            Disk:               disk2

            Status:             Online

            Size (Total):       556000083968 B (556.0 GB)

            Size (Converted):   -none-

            Revertible:         No

            LV Name:            HD

            Volume Name:        HD

            Content Hint:       Apple_HFS

 

> diskutil cs delete 40B334F6-6988-4727-9A2B-48E7999F4047


Started CoreStorage operation

Ejecting Logical Volumes

[ \   \   \   \   \   \   \   \   \   \   \   \   \   \   ]

 

I remain stuck there and cannot delete the Logical Volume Group, or do anything at all on it's components.

 

By now I would be satisfied if I could just wipe /dev/disk0 and /dev/disk1 completely and start over, but unfortunately this does not work either :

 

> diskutil zeroDisk /dev/disk0


Started erase on disk0

Error: -69879: Couldn't open disk

Underlying error: 16: POSIX reports: Resource busy

 

I hope someone will be able to help me, I have absolutely no idea how to recover this computer!

 

 

Jerome Tremblay

OS X Mountain Lion (10.8.2)

Posted on Mar 12, 2013 8:57 AM

Close

Q: Unable to reformat/repartition Fusion Drive

  • All replies
  • Helpful answers