When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Monterey.

After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume.

Terminal shows the progress as the volume is erased.

When prompted, type Y to confirm that you want to erase the volume, then press Return.Terminal doesn't show any characters as you type. When prompted, type your administrator password.If the volume has a different name, replace MyVolume in the command with the name of your volume.

Each command assumes that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. Type or paste one of the commands below into Terminal, then press Return to enter the command.Open Terminal, which is in the Utilities folder of your Applications folder.Plug in the USB flash drive or other volume that you're using for the bootable installer.You'll be presented with a list of bootable drives. You may now restart your Mac and hold down the Option key after hearing the boot sound.

You will be asked to enter your Administrative account password.Īfter about 30 minutes the creation of your USB Install Key for OS X El Capitan will be complete. Sudo '/Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia' -volume '/Volumes/El Capitan' -applicationpath '/Applications/Install OS X El Capitan.app' -nointeraction Additionally, make sure you do not have any other volumes named 'El Capitan' except for the one we just created in Step Five.Įxecute the following command in the Terminal window to create your OS X El Capitan Install key. Make sure your empty USB key is still inserted. Launch Terminal from the Applications:Utilities folder. When asked to confirm click the Partition button. Next click the Apply button to save your changes. Set the Partition Layout to 1 Partition, set the Name to 'El Capitan', and set the Format to Mac OS Extended (Journaled).Ĭlick the Options button then choose GUID Partition Table from the popup window then click the OK button. Select your USB thumb drive from the list on the left and click the Partition tab. Launch Disk Utility from the Applications:Utilities folder.

How to make el capitan bootable usb