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#MAC OS ISO TO USB BOOTABLE SOFTWARE HOW TO#
#MAC OS ISO TO USB BOOTABLE SOFTWARE MAC OS#
#MAC OS ISO TO USB BOOTABLE SOFTWARE INSTALL#
#MAC OS ISO TO USB BOOTABLE SOFTWARE SOFTWARE#

In the Allowed Boot Media section, change the option to Allow booting from external or removable media.Ĭlick the Apple menu and select Restart, then hold down the Option key while your Mac reboots. Enter the password you use to sign into this Mac. Click the Utilities menu and choose Startup Security Utility. If you bump into this message, follow the prompts to restart, then hold down Command+R to open macOS Recovery.

Your Mac will then reboot.Īn error message may appear showing that the security settings do not allow it to use an external startup disk. Select the volume for your bootable USB drive, then click the up arrow or press Return. Hold the Option key as you do so, then release the Option key when a dark screen appears displaying your bootable volumes. Insert the USB drive and power up the machine. Now, let’s say at some future date that your Mac is misbehaving and has trouble booting up. You can now close Terminal and eject the USB drive.

#MAC OS ISO TO USB BOOTABLE SOFTWARE INSTALL#

As the process wraps up, Terminal tells you that it’s making the disc bootable.įinally, it indicates that the volume for your USB drive now has the same name as the installer you used, such as Install macOS Big Sur. Be patient at this point as the copy process takes a very long time. The program then indicates that the necessary files are being copied to the disk. Terminal tells you that the disk is being erased and displays the progress. Terminal tells you that it needs to erase the volume. Note that Terminal won’t display any characters as you type the password.

#MAC OS ISO TO USB BOOTABLE SOFTWARE HOW TO#

If you don’t know the password for the root user, follow this Apple support page to learn how to change this password. Rather, it’s the password for the root user on your Mac. This is not the password for the account that you use to log in.

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

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

macOS Mojave: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MyVolume.

macOS Catalina: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MyVolume.

macOS Big Sur: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MyVolume.

Replace the string My Volume My Volume with the volume name of your USB drive. At the Terminal prompt, type one of the following commands, depending on your version of macOS. Return to the Utilities folder on your Mac and open the Terminal app. Make sure the USB drive is still connected to your Mac. If the installer window opens after downloading the OS, close it by clicking the Install macOS menu and selecting Quit install macOS. At the App Store, click Get and then click the Download button. To do this, click one of the following links on your Mac, depending on which version of macOS you want to use:Ĭlick the button to View in Mac App Store, then click the Get button. Your next step is to download and install macOS to the USB drive. After the drive has been erased and reformatted, click Done.

#MAC OS ISO TO USB BOOTABLE SOFTWARE MAC OS#

Change the format to Mac OS Extended (Journaled). To simplify the process, choose a short name with no spaces. Open Disk Utility, select the USB drive, and click the Erase icon. To create the bootable installer, plug the USB drive into your current Mac.

#MAC OS ISO TO USB BOOTABLE SOFTWARE SOFTWARE#

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