This drive will be formatted as part of the process so it’s imperative to ensure that all required data that may have been stored on it is backed up to a safe location. First and foremost, you’ll need to have a spare USB flash drive that offers a minimum 8 GB capacity.If you fall into that category then you’ve come to the right place as we’re going to take a look at how to make an OS X El Capitan bootable USB flash drive using the easiest and most user-friendly method possible.īefore we are able to proceed with creating an OS X 10.11 El Capitan bootable USB drive, there are a few essentials that need to be taken care of. However, if you’re like me, then the chances are that you’ll want to take the opportunity to back up the data that you require and use the El Capitan release as an opportunity to purge and start again with a fresh, clean install of the platform. Click on the arrow button under the disk icon.It’s logical to assume that the majority of Mac owners with a compatible computer will want to simply go through the automated process of upgrading from a current installation of OS X Mavericks or Yosemite to the latest El Capitan release.Select the disk icon for the USB flash drive.Release the key when the Boot Manager screen appears.Immediately after the chime press and hold down the " OPTION" key.The bootable installer can be used to install the selected version of macOS. Wait for the return of the Terminal prompt signifying the process has completed. You will be asked for your admin password. Sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ Mavericks.app Sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ Yosemite.app Sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ macOS\ Sierra.app Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume Sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume Sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume Paste that entire command line from below at the Terminal's prompt: Choose the appropriate command line (begins with "sudo") depending upon what OS X installer you want. Open the Terminal in the Utilities' folder. Click on the Apply button and wait for the Done button to activate.Set the Format type to Mac OS Extended (Journaled.) In the drop down panel set the partition scheme to GUID.Click on the Erase button in the Disk Utility toolbar.
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