Paste that entire command line from below at the Terminal's prompt:
Choose the appropriate command line (in red) depending upon what OS X installer you want. Open the Terminal in the Utilities' folder. Set the Format type to Mac OS Extended (Journaled.)
You will need an 8GB or larger USB flash drive that has been partitioned and formatted for use with OS X. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal window. Second, see this How To outline for creating a bootable El Capitan installer. Bootable USB Installers for OS X Mavericks, Yosemite, El Capitan, and Sierraįirst, review this introductory article: Create a bootable installer for macOS.
