bootable usb mac os sierra from command line

Creating a Bootable USB Drive for Mac OS Sierra from the Command Line

Are you looking to create a bootable USB drive for Mac OS Sierra using the command line? Before we dive into the process, let's clarify what a bootable USB drive is and what you need to get started.

A bootable USB drive is an external drive that contains a version of macOS, which can be used to start up your Mac computer. This drive should be formatted as Mac OS Extended, with at least 14GB of free space available.

To create a bootable USB drive for Mac OS Sierra from the command line, you will need:

* An external drive (USB flash drive or any other type) with at least 14GB of free space.

* A valid copy of macOS Sierra installation media (either an original download or a backup).

Here's a step-by-step guide on how to create a bootable USB drive for Mac OS Sierra from the command line:

1. Connect your external drive to your Mac computer.

2. Open the Terminal app, which can be found in the Applications/Utilities folder or by using Spotlight search.

3. Insert the following command to check if your external drive is recognized by your system: `df -h`

4. Note down the device name of your external drive (it should look something like `/dev/disk2`).

5. Run the following command to partition and format your external drive as Mac OS Extended: `diskutil eraseDisk MS-DOS 'Bootable USB' /dev/rdiskX` (replace `/dev/rdiskX` with the actual device name of your external drive).

6. Insert the macOS Sierra installation media into your computer.

7. Run the following command to create a bootable USB drive: `sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Bootable\ USB`

That's it! Your external drive should now be bootable and ready to use.

Remember that this process will erase all data on the external drive, so make sure to back up any important files before proceeding. Additionally, if you encounter any issues during the process, you can try restarting your Mac computer or seeking help from Apple support.

Bootable usb mac os sierra from command line