Q: Boot Camp failed to install.

Usage:  diskutil [quiet] <verb> <options>, where <verb> is as follows:

     list                  (List the partitions of a disk)

     info[rmation]         (Get information on a specific disk or partition)

     listFilesystems       (List file systems available for formatting)

     activity              (Continuous log of system-wide disk arbitration)

     u[n]mount             (Unmount a single volume)

     unmountDisk           (Unmount an entire disk (all volumes))

     eject                 (Eject a disk)

     mount                 (Mount a single volume)

     mountDisk             (Mount an entire disk (all mountable volumes))

     enableJournal         (Enable HFS+ journaling on a mounted HFS+ volume)

     disableJournal        (Disable HFS+ journaling on a mounted HFS+ volume)

     moveJournal           (Move the HFS+ journal onto another volume)

     enableOwnership       (Treat as exact User/Group IDs for a mounted volume)

     disableOwnership      (Ignore on-disk User/Group IDs for a mounted volume)

     rename[Volume]        (Rename a volume)

     verifyVolume          (Verify the file system data structures of a volume)

     repairVolume          (Repair the file system data structures of a volume)

     verifyDisk            (Verify the components of a partition map of a disk)

     repairDisk            (Repair the components of a partition map of a disk)

     eraseDisk             (Erase an existing disk, removing all volumes)

     eraseVolume           (Erase an existing volume)

     reformat              (Erase an existing volume with same name and type)

     eraseOptical          (Erase optical media (CD/RW, DVD/RW, etc.))

     zeroDisk              (Erase a disk, writing zeros to the media)

     randomDisk            (Erase a disk, writing random data to the media)

     secureErase           (Securely erase a disk or freespace on a volume)

     partitionDisk         ((re)Partition a disk, removing all volumes)

     resizeVolume          (Resize a volume, increasing or decreasing its size)

     splitPartition        (Split an existing partition into two or more)

     mergePartitions       (Combine two or more existing partitions into one)

     appleRAID <verb>      (Perform additional verbs related to AppleRAID)

     coreStorage <verb>    (Perform additional verbs related to CoreStorage)

diskutil <verb> with no options will provide help on that verb

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *121.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            120.5 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +80.0 GB    disk1

                                 Logical Volume on disk0s2

                                 4A90C9D5-0383-4F58-8A17-913E35444299

                                 Unlocked Encrypted

Matass-MacBook-Air:~ Matas$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group C48C38C2-5D72-41D0-AE63-FF722ADE9440

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

    Name:         Macintosh HD

    Status:       Online

    Size:         120473067520 B (120.5 GB)

    Free Space:   40120819712 B (40.1 GB)

    |

    +-< Physical Volume 0A376ADA-82A1-4307-93D3-0F63AC07E5C7

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     120473067520 B (120.5 GB)

    |

    +-> Logical Volume Family 056FCBA5-AB8C-4FC1-841A-DE658C6BB9E1

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

        Encryption Type:         AES-XTS

        Encryption Status:       Unlocked

        Conversion Status:       Complete

        High Level Queries:      Fully Secure

        |                        Passphrase Required

        |                        Accepts New Users

        |                        Has Visible Users

        |                        Has Volume Key

        |

        +-> Logical Volume 4A90C9D5-0383-4F58-8A17-913E35444299

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          79999926272 B (80.0 GB)

            Revertible:            Yes (unlock and decryption required)

            Revert Status:         Reboot required

            LV Name:               Macintosh HD

            Volume Name:           Macintosh HD

            Content Hint:          Apple_HFS