How to Fix Volume is not a Valid Volume Mount Point macOS Sierra

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In some cases, you get the error message “Untitled is not a valid volume mount point” when you are creating a macOS Sierra bootable installer from Terminal.

How to Fix Volume is not a Valid Volume Mount Point macOS Sierra

Fix Volume is not a Valid Volume Mount Point macOS Sierra

This is a bug of macOS Sierra installer. The downloaded installer from Apple is version 12.6.06. All you have to do is open its Info.plist file and change the value for CFBundleShortVersionString from 12.6.06 to 12.6.03.

How to Fix Volume is not a Valid Volume Mount Point macOS Sierra

This can be done with a single command using plutil:

sudo plutil -replace CFBundleShortVersionString \
-string "12.6.03" /Applications/Install\ macOS\ Sierra.app/Contents/Info.plist

Once done, try to create a macOS Sierra bootable USB stick the error should be gone.

$ sudo plutil -replace CFBundleShortVersionString \
-string "12.6.03" /Applications/Install\ macOS\ Sierra.app/Contents/Info.plist
Password:
$ sudo ./createinstallmedia --volume /Volumes/Untitled \
--applicationpath /Applications/Install\ macOS\ Sierra.app

Ready to start.
To continue we need to erase the disk at /Volumes/Untitled.
If you wish to continue type (Y) then press return: y
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.

Comments (4)

  1. Awesome; thanks!
    The plutil command didn’t work because permission was denied, but I worked around that by making a copy of “Install macOS Sierra.app”, editing that as you describe, and renaming it back again. Then the createinstallmedia step worked as expected. Thanks for the help!

    Reply
  2. Спасибо! Эти действия мне помогли. Я очень благодарен за помощь.

    Reply

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