How to change Logical Volume name My kid did some magic with my Mac and somehow successfully rename the disk name to some weird name. 

OS''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';;;;;;;;;;;;;;;;;;;;     ]\[X


When I tried to rename it back, Finder refused it.



I tried with diskutil tool but there is no command to change the LV name of a Logical Volume Family.

Dump from the diskutil command:

192-168-1-153:~ werynguyen$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 48AFE413-7A7C-47A2-9D1E-4F09A2788927
    =========================================================
    Name:         OSX
    Status:       Online
    Size:         499113885696 B (499.1 GB)
    Free Space:   18972672 B (19.0 MB)
    |
    +-&lt; Physical Volume B0F241BF-1BB3-4273-BAB4-825D93D4F098
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     499113885696 B (499.1 GB)
    |
    +-&gt; Logical Volume Family BC9B82C2-A485-4E2A-BBD3-4692684D4DAF
        ----------------------------------------------------------
        Encryption Type:         None
        |
        +-&gt; Logical Volume DF2B66E8-0534-430A-B9F6-5697E4E294B2
            ---------------------------------------------------
            Disk:                  disk1
            Status:                Online
            Size (Total):          498742591488 B (498.7 GB)
            Revertible:            Yes (no decryption required)
            LV Name:               OS''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';;;;;;;;;;;;;;;;;;;;     ]\[X
            Content Hint:          Apple_HFS


Does anyone know how to fix this? My macOS is 10.12.3 macOS Sierra
You should be able to rename the volume with diskutil if it is mounted:

diskutil rename "OS''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';;;;;;;;;;;;;;;;;;;;     ]\[X" "OSX"




Booted to Recovery Mode, launch Terminal from the menubar > Utilities.

Enter df to check if the CoreStorage volume is mounted:

Filesystem                     512-blocks       Used Available Capacity   iused    ifree %iused  Mounted on
...
/dev/disk2                      132538512   30003784 102534728    23%   3750471 12816841   23%   /Volumes/OS''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';;;;;;;;;;;;;;;;;;;;     ]\[X
...


If the volume is mounted

diskutil rename /Volumes/OS\' 


hit the tab key here to autocomplete the volume name and add "OSX":

diskutil rename /Volumes/OS\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\ \ \ \ \ \]\\\[X/ "OSX"