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.

What you need to create a bootable installer

Restore Image from Disk Utility in El Capitan to make bootable USB But if you are creating this bootable USB installer drive for Mountain Lion on OS X Maverics (Ver. 10.9) or below then you need to go to the restore tab on the right pane and just drag and drop the BaseSystem.dmg in source field and USB drive icon to the destination field as. From this point, we've now provided plenty of installation files whether for installing macOS on Windows or on Mac. Such as macOS Sierra DMG, macOS High. Bootable Lion Usb From Dmg Windows 10. Click on the 'Restore' tab, choose the InstallESD.dmg file as the source and your flash drive as the destination. Hit the Apply button and it will create your bootable USB drive. Reboot into OS X and hold the option key when you hear the startup chime. You can boot into. It installs an app named Install OS X El Capitan into your Applications folder. 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. Burn your ISO file and dmg file directly to CD/DVD Blu-ray. Then Right-click on that flash you want to create bootable USB for Mac OS El Capitan then.

• A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14GB 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 download to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, quit it without continuing 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. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
• Download: OS X El Capitan
  This downloads as a disk image named InstallMacOSX.dmg. 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

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:

Bootable Usb El Capitan Dmg

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument and installer path, similar to the way this is 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 shows the progress as the volume is erased.
4. After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
5. When Terminal says that it's done, 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.
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 showing 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 that the External Boot setting in Startup Security Utility is 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

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.

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

I need to download the El Capitan to install on my Mac computer. What is the best place to download the El Capitan dmg or El Capitan iso.

Is this a good question?

Insert the USB flash drive containing the El Capitan installer into your Mac. Restart your Mac while holding down the option key. After a short delay, your Mac will display the OS X Startup Manager, which will display all of your bootable devices. This should include the bootable USB flash drive you just created. Here’s how to download Mac OS X El Capitan DMG file also. MacOS X El Capitan is a stable version of OS X and it is quite different and known as the advanced version of Mac. This operating system contains countless supplements and a variety of work capacities. In this launch, Apple primarily concentrated on compatibility, security, and stability. To create a bootable El Capitan installer drive, you need the El Capitan installer from the Mac App Store and a Mac-formatted drive that’s big enough to hold the installer and all its data.

Comments:

If you wanna create bootable USB flash drive for Mac OS X El Capitan on Windows PC. You need a TransMac Software. That’s not a problem if you use a computer that supports legacy or UEFI. Just you need TransMac and El Capitan dmg file. Siddharth choubisa September 20, 2016 at 3:43 PM.

I've been looking for El Capitan for weeks and today I finally managed to get it.

The Appstore no longer has OS X El Capitan available to download.

To solve this issue follow this link: http://bit.ly/ElCaptanOriginalOSX

.

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The Appstore only has updates but not the original OS. So If you did not download El Capitan before it was removed from the App Store then you will not be able to get it from the Appstore anymore. You can now only download it via alternative sources, Just make sure they are trusted sources though. Hence I recommended the link above.

Hope this helps you also.

@Kate smith, They are illegally selling Apples software !

Find the official installers here

Infographic over the many versions of OSX/macOS

@katemor Its not true that App Store no longer has El Capitan as download. It does not have it as download, if your Apple-ID has never registered a machine with El Capitan. Otherwise they are still there.

And your link points to a place, which charges $20 for Apple software. Not quite legal..

Bootable USB Installers for OS X Mavericks, Yosemite, El Capitan, and Sierra

Make Bootable Usb El Capitan Dmg

Make Dmg Bootable

First, review this introductory article: Create a bootable installer for macOS. Second, see this How To outline for creating a bootable El Capitan installer. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal window. You will need an 8GB or larger USB flash drive that has been partitioned and formatted for use with OS X.

Drive Partition and Format

1. Open Disk Utility in the Utilities' folder.
2. After Disk Utility loads select the drive (out-dented entry with the mfg.'s ID and size) from the side list.
3. Click on the Erase tab in the Disk Utility toolbar. Name the drive, 'MyVolume'. <---- IMPORTANT!
4. In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
5. Click on the Apply button and wait for the Done button to activate. When it does click on it.
6. Quit Disk Utility.

Create Installer

Dmg To Bootable Usb Mac

Open the Terminal in the Utilities' folder. Choose the appropriate command line (in red) depending upon what OS X installer you want. Paste that entire command line from below at the Terminal's prompt:

Command for macOS High Sierra:

sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS High Sierra.app

Command for macOS Sierra:

sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS Sierra.app

Command for El Capitan:

Download El Capitan Dmg

sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X El Capitan.app

Bootable Usb Mac Windows 10

Command for Yosemite:

sudo /Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Yosemite.app

Command for Mavericks:

Create Bootable Usb El Capitan Dmg

sudo /Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Mavericks.app

Convert El Capitan Dmg To Bootable Usb

Make Bootable Usb From Dmg

Press RETURN. You will be asked for your admin password. It will not echo to the Terminal window. Then press RETURN again. Wait for the return of the Terminal prompt signifying the process has completed. It takes quite some time to finish. Be patient.

Usb El Capitan Dmg File

Dmg To Bootable Usb Mac El Capitan Upgrade

Sep 13, 2018 1:16 PM