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May 04, 2020 How to create a bootable installer for macOS El Capitan. Step 1: Download macOS El Capitan. Step 2: Once El Capitan is downloaded, You should make sure that you close the installer and Open the finder. Step 3: In Finder, You need to head over to Application → Install macOS El Capitan right click on install macOS El Capitan and click Show package contents. Oct 07, 2015 Making The Bootable El Capitan USB Drive. We’re all here for one thing, so lets dive right in at the deep-end and get started with the process. We first of all need the OS X El Capitan installer that we alluded to as part of the “Pre-Requisites” above. Launch the Mac App Store and search for El Capitan. Mar 24, 2020 On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or.pkg installer. Use the 'createinstallmedia' command in Terminal.

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Create a Bootable macOS High Sierra Install Drive with DiskMaker X 7 Thursday, September 28th, 2017 Author: Steve Sande. Like clockwork, Apple updates macOS on an annual basis. Shortly after the release of a new version of macOS, we can expect a new version of a venerable Mac utility for creating bootable install disks: DiskMaker X. Today we are going to share how to backup Macbook using the Time Machine that is installed on Mac OS X El Capitan. Only thing you need to make a backup file is an external hard drive. If you are ready to back up, let’s do it! Connect your external hard drive to Mac computer. When backing up on Mac, it uses whole capacity of. May 15, 2020 Use Terminal to Create the El Capitan Bootable USB Installer Connect the USB flash drive to your Mac. Give the flash drive an appropriate name. You can do this by double-clicking the device’s name on the desktop and then typing a new name. Now we'll install a fresh copy of High Sierra from the installer drive. With the boot drive connected, start up - or restart - your Mac while holding down the Option key (also known as Alt.

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

Download macOS

Find the appropriate download link in the upgrade instructions for each macOS version:

macOS Catalina, macOS Mojave, ormacOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.

OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the 'createinstallmedia' command in Terminal

Connect the USB flash drive or other volume that you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
Open Terminal, which is in the Utilities folder of your Applications folder.
Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume.
Catalina:*
Mojave:*

High Sierra:*
El Capitan:
Press Return after typing the command.
When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created.
When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.

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* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument, similar to the way this argument is used in the command for El Capitan.

Use the bootable installer

After creating the bootable installer, follow these steps to use it:

Plug the bootable installer into a compatible Mac.
Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it.
Choose your language, if prompted.
A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

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Learn more

For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:

Catalina: /catalina-office-for-mac-2011.html.