Bootable Os X Installer

 



These advanced steps are primarily for system administrators and people 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 it on multiple computers without having to download the installer each time.

  • When OS X shipped on a DVD a good number of years ago, you always had the convenience of a bootable installer—an OS X installer that could be used to boot your Mac if its own drive was having.
  • I tried the one (Create bootable USB installer if install.wim is greater than 4GB) but what I quit don't understand is, which file goes where? Just follow the instructions in that tutorial. In its step 4 you will copy your custom install.wim file to folder you created in its step 1.

Download El Capitan OS X is also significant since it’s the last version of Apple Mac OS X releases as its successor Sierra was released in the year 2016 under the brand macOS. El Capitan is a rock formation found in Yosemite National Park, which gives out the meaning that the new release is a solid version of its predecessor, Yosemite. Option 1: Use createinstallmedia. Starting with Mavericks, hidden inside the OS X installer is a Unix program called createinstallmedia, provided by Apple specifically for creating a bootable.

What you need to create a bootable installer

  • A USB flash drive or other secondary volume, formatted as Mac OS Extended, with at least 12 GB of available storage
  • A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra or El Capitan

Download macOS

  • Download: macOS Big Sur, macOS Catalina, macOS Mojave or macOS High Sierra
    These will be downloaded to your Applications folder as an app called Install macOS [version name]. If the installer opens after download, quit it without continuing the installation. 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. For enterprise administrators, please download from Apple, not a locally hosted software update server.
  • Download: OS X El Capitan
    This will be downloaded as a disk image called InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, which has the name 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.

Bootable Os X El Capitan Installer

Use the 'createinstallmedia' command in Terminal

  1. Connect the USB flash drive or other volume that you're using for the bootable installer.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is 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.

Big Sur:*

Catalina:*

Mojave:*

High Sierra:*

El Capitan:

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


After typing the command:

  1. Press Return to enter the command.
  2. When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
  3. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal displays the progress as the volume is being erased.
  4. After the volume has been erased, you may see an alert stating that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
  5. When Terminal says it's finished, the volume will have the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal and eject the volume.

Use the bootable installer

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

  1. Plug the bootable installer into a Mac that is connected to the Internet and compatible with the version of macOS you're installing.
  2. Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes and a gear icon labelled Options.
  3. Select the volume containing the bootable installer, then click Continue.
  4. When the macOS installer opens, follow the onscreen instructions.

Intel processor

  1. Plug the bootable installer into a Mac that is connected to the Internet and compatible with the version of macOS you're installing.
  2. Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac.
  3. Release the Option key when you see a dark screen displaying your bootable volumes.
  4. Select the volume containing the bootable installer. Then click the up arrow or press Return.
    If you can't start up from the bootable installer, make sure the External Boot setting in Startup Security Utility has been set to allow booting from external media.
  5. Choose your language, if prompted.
  6. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

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

  • Big Sur: /Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia
  • Catalina: /Applications/Install macOS Catalina.app/Contents/Resources/createinstallmedia
  • Mojave: /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia
  • High Sierra: /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia
  • El Capitan: /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia

A bootable installer doesn't download macOS from the Internet, but it does require an Internet connection to get firmware and other information specific to the Mac model.


Apple OS X El Capitan beta was first released to developers in July 2015 and was released to the millions of Apple consumers worldwide September of 2015, following several beta releases. This version of the Apple Mac OS X marks a significant milestone in Apple Mac OS history for many reasons. It was the 12th major release of the Mac OS X line, since the introduction of the new brand in 2002 by Apple from its previous product line of Mac OS.

Download El Capitan OS X is also significant since it’s the last version of Apple Mac OS X releases as its successor Sierra was released in the year 2016 under the brand macOS. El Capitan is a rock formation found in Yosemite National Park, which gives out the meaning that the new release is a solid version of its predecessor, Yosemite. The naming convention to use important landmarks of Northern California started with the Apple release of Mavericks.

Installer

At the time of release, El Capitan was promoted as a significant release by Apple similar to how they promoted Mavericks and Yosemite upgrades which were the predecessors of El Capitan.

Brief Guide For Download El Capitan

In this article, we’ll also discuss few things that you should do before you upgrade your OS to the new Download El Capitan version in order to make sure your computer is all ready for the new upgrade including whether your Mac is compatible both in terms of hardware and software. There we will discuss the minimum system requirements and supported Mac devices released in the past.


Installation Methods For Download El Capitan

Bootable Os X Installer

1. Download El Capitan Mac OS X from scratch while upgrading the current Mac OS version

The new Apple El Capitan supports two installations methods. As in the case of many other operating system installations, Apple El Capitan also provides an option to upgrade from your current OS version or the option to install the new download El Capitan Mac OS X from scratch. The default method which is the upgrade installation option will try to install OS X El Capitan to your Mac device while protecting your user data and app data. This is currently the most frequently used method of upgrading to the new version of Mac OS X and also the easiest too. If your Mac computer is in very good shape and running smoothly, it is recommended to install using this method.

2. Download El Capitan and install fresh the Mac OS without upgrading current Mac OS version

The second method of installations is the clean install method. It basically erases the entire content of your chosen drive and installs a fresh, smooth version of the new operating system which is download El Capitan Mac OS X in this case. This would mean no older versions of the Mac OS X, system applications and user data all will be wiped out with a clean install. This is an excellent choice to test an operating system on a separate disk drive or a partition in cases where you have had prevailing software issues on your computer which you have been unable to fix. Therefore when these issues become a major headache for you, your best option is to perform a clean install of the OS X – El Capitan. Although you may have to let go of your apps and their data, it becomes a smaller price to pay for when compared to running the system in its current state with a truckload of software issues.

Bootable Os X Installer

The upgrade install option is pretty straightforward. Therefore in this article, we will only discuss the download El Capitan andclean installation of El Capitan Mac OS X.


Make Bootable Os X Installer On Windows

Download El Capitan iso and dmg installer