Fui criar o pendrive bootavel e aparece o erro abaixo. O pendrive esta no formato MAC OS Expandido (Journaling)
MacBook-Air-de-Wagner:~ Wagner$ sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --applicationpath/Applications/Install\ macOS\ Sierra.app
Password:
Usage: createinstallmedia --volume <path to volume to convert> --applicationpath <path to Install macOS Sierra.app> [--force]
Arguments--volume, A path to a volume that can be unmounted and erased to create the install media.
--applicationpath, A path to copy of the OS installer application to create the bootable media from.
--nointeraction, Erase the disk pointed to by volume without prompting for confirmation.
Example: createinstallmedia --volume /Volumes/Untitled --applicationpath "/Applications/Install macOS Sierra.app"
MacBook-Air-de-Wagner:~ Wagner$