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#How to install mac os from mac os dmg boot usb install
#How to install mac os from mac os dmg boot usb password
#How to install mac os from mac os dmg boot usb download
#How to install mac os from mac os dmg boot usb free

For this reason, you need an external HD that is at least the same size as your Mac’s internal memory

External hard drive (optional): You need to back up your data to save your important files before installing the new macOS.

Make sure the installer is fully downloaded (about 5 GB)

#How to install mac os from mac os dmg boot usb download

Good internet connection: You need to download the macOS High Sierra installer from the App Store.

Blank USB drive: You need a flash drive that has at least 16 GB of available storage space to create a bootable macOS High Sierra installer.

Requirements to create a macOS High Sierra bootable USB driveĬreating a bootable drive with a High Sierra installer is quite simple.

Installing macOS the clean way (using a non-startup drive).

Creating a bootable USB using the Terminal.

Requirements to create macOS High Sierra bootable USB drive.

It’s not hard at all, and in this article, we will guide you through:

#How to install mac os from mac os dmg boot usb install

It makes sense to create a bootable USB flash drive to install the High Sierra operating system if you want to quickly install it on several Macs without having to download the installer each time. The app will help you delete junk, duplicates, and unnecessary apps in a couple of clicks.

#How to install mac os from mac os dmg boot usb free

MacKeeper allows you to free up necessary gigabytes easily. Follow the instructions when the macOS installer opens.Please note that before installing any system, you need to ensure there is sufficient space on your Mac. Select the volume containing the bootable installer, then select ‘Continue’. Hold the power button until you see the startup options window. Make sure this machine is connected to the internet and supports the macOS version you’re installing. Click ‘Continue’ and follow the instructions.įirst, plug the bootable installer into the Mac you wish to install macOS. Select ‘Install macOS’ or ‘Install OS X’ from the Utilities window. Select the volume that contains the bootable installer. Release the ‘Option’ key when you see a dark screen showing your bootable volumes. Press and hold the ‘Option’ key after turning on or restarting the Mac. Plug the bootable installer into a Mac that’s connected to the internet and is compatible with the macOS version you’re installing. The steps are different, depending on whether you're using an Intel-based Mac or one with Apple silicon. It's now time to use the bootable installer to install a fresh copy of macOS. You've now successfully created a bootable installer that you can use to install macOS on other machines.

If asked, click 'OK' to allow the copying of files to proceed. Type 'Y' to confirm that you want to erase the volume, then press 'Return'.

#How to install mac os from mac os dmg boot usb password

Type your administrator password when prompted, then press 'Return' again.

Continue with TerminalĪfter pasting the command above, hit the 'Return' key.

Change the name in the command to match your settings, if necessary.įor macOS Big Sur, copy and paste the following into Terminal: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS Catalina: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS Mojave: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS High Sierra: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor OS X El Capitan: sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app 3. With each command, it's assumed the installer is located in your 'Applications' folder and 'MyVolume' is the name of the USB flash drive. The command differs, depending on the macOS version you're going to install.

In the next step, you'll enter a command in Terminal. Choose 'Finder' then select 'Go' from the menu bar. Connect the USB flash drive to the computer you wish to install macOS. Once you have your bootable installer ready, it's time to move to the next step.