If you are planning to install OS X El Capitan on your Mac or upgrade your existing operating system, then creating a bootable USB installer makes the process faster and easier.

A bootable USB installer is simply a USB flash drive that contains a copy of the OS X El Capitan installer application. Once the USB drive is created, you can use it to install OS X El Capitan on any Mac computer.

Here’s a step-by-step guide on how to create a bootable USB installer for OS X El Capitan:

Step 1: Download the OS X El Capitan installer

First, you need to download the OS X El Capitan installer from the Apple App Store. Simply open the App Store and search for “OS X El Capitan.” Click on the “Download” button to begin the download process.

Step 2: Insert the USB flash drive

Insert the USB flash drive into your Mac computer. Ensure that the drive is formatted as “Mac OS Extended (Journaled)” and has at least 8 GB of free space.

Step 3: Use Terminal to create the bootable USB installer

Open Terminal, which can be found in the Utilities folder within the Applications folder.

Type the following command into Terminal: sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia –volume /Volumes/USBDrive

Replace “USBDrive” with the name of your USB flash drive. It’s essential to make sure the drive name is accurate or this command will not work.

You’ll then be asked to enter your administrator password. After entering your password, you’ll get the option to confirm that you want to erase and create a bootable USB drive by typing Y and pressing enter.

Step 4: Wait until the process completes

The process of creating the bootable USB installer will take several minutes. Do not unplug the USB flash drive until the process completes.

Once the process is completed, you’ll be notified in the Terminal window.

Congratulations! You have successfully created a bootable USB installer for OS X El Capitan.

Wrapping up

Having a bootable USB installer of OS X El Capitan means that you have a portable and convenient way to install, reinstall or upgrade the operating system on your Mac.

Creating a bootable USB installer for OS X El Capitan isn’t as daunting as it seems. As long as you follow the steps above carefully, you’ll be successful in creating your bootable USB drive without any issues.