Create Bootable Usb From Dmg Mac High Sierra

If you're thinking about installing macOS Catalina, the first thing to consider is whether you want to install it directly onto your Mac or create a bootable drive. You can use a bootable drive on a hard drive partition for dual-software installation, to install on multiple Macs in your home, or as a bootable drive if you can't use the Internet Recovery partition.

Note: These instructions require the use of Terminal. If you don't feel comfortable making changes to your Mac with Terminal, you can create a bootable disk using the DiskMaker X program.

May 04, 2019  In order to make bootable USB of macOS high Sierra, you will need an 8gb or higher USB 2.0 or USB 3.0 drive. Note: By using USB 3.0 you might face some issues while booting into the installer, in that case, please try using USB 2.0 drive. Dec 16, 2019. If your Mac is using macOS Sierra or earlier, include the -applicationpath argument, similar to the way this argument is used in the commands for Sierra and El Capitan. Use the bootable installer After creating the bootable installer, follow these steps to use it. How to create a bootable macOS High Sierra installer drive Put the macOS High Sierra installer on an external USB thumb drive or hard drive and use it to install the operating system on a Mac. Create a bootable USB drive for macOS X versions including El Capitan, Yosemite, Mavericks, Sierra, High Sierra, and Mojave. May 04, 2019 After the progress bar is finished, your bootable USB of macOS high sierra is ready. Note: After the USB drive is formatted as mac or the dmg is restored successfully windows will give you an alert to format the drive due to incompatible file-system, but don’t click format otherwise you have to start over again.

Before you start

Before you get started, make sure you have a thumb drive with at least 15GB of storage, or a spare external hard drive (one you aren't planning to use for anything else). You'll also need to download macOS Catalina and ensure that it's sitting in your Applications folder.

Note: After macOS Catalina has downloaded, it will automatically launch the installer to begin the installation process. Quit the installer when this happens.

And please: Don't forget to back up your Mac before you do anything.

How to format your external drive for macOS Catalina

You'll need to start with a clean thumb drive or external hard drive in order to make it a bootable drive.

  1. Plug the thumb drive or cable for your hard drive into the appropriate port on your Mac.
  2. Click on Finder in your Dock to open a Finder window.
  3. Select Applications from the list on the left side of the window.

  4. Scroll down and double-click on Utilities.
  5. Scroll down and double-click on Disk Utility.

  6. Select your thumb drive or external drive under External.
  7. Click on the Erase tab at the top of the window.

  8. Note the name of your external hard drive (probably 'Untitled') because you will need it when you create a bootable drive. If you have more than one external drive with the same name, you will need to rename the drive you are using as a bootable installer now.
  9. If your Mac is using AFS+, select Mac OS Extended (Journaled) from the format list. If your Mac is using APFS, select APFS from the list of options.
  10. If Scheme is available, select GUID Partition Map.
  11. Click Erase.
  12. Click Done when the process is complete.
  13. Close the Disk Utility window.

Your thumb drive or external hard drive is now ready.

How to put macOS Catalina onto your external drive

Important: You will need to use an administrator account on your Mac in order to run the Terminal commands to create a boot drive. You'll also need to ensure that macOS Catalina is in your Applications folder and you'll need to know the name of the external drive.

  1. Click on Finder in your Dock to open a Finder window.
  2. Select Applications from the list on the left side of the window.

  3. Scroll down and double-click on Utilities.
  4. Scroll down and double click on Terminal.

  5. Recall the name of your formatted external drivewhen entering the following text into Terminal. If it is not named 'Untitled,' you will need to change the command syntax for the pathname where it says: Volumes/MyVolume. The name of the drive can't have any spaces and it is case sensitive.
  6. Enter the following text into Terminal (Don't forget to change the name 'Untitled' in the text below to the actual name of your external drive. Names are case sensitive and can't have any spacing.):

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

  7. Hit the enter/return key.

  8. Enter your administrator account password. This is the password you use to make changes on your Mac or log in. No text will appear in Terminal when you enter the password.

The process could take a very long time, depending on the drive. When it is done, the Terminal window will report 'Done.'

How to install macOS Catalina with a bootable installer drive

Once macOS Catalina is installed on your external drive, you can install it on any Mac with the drive plugged into it. You can use this installer to upgrade your operating system easily on multiple Macs or to help downgrade if you decide you want to go back to an earlier version of macOS.

If you're downgrading from macOS Catalina, please check out this guide instead.

If you're upgrading to macOS Catalina, follow the steps below.

  1. Turn off the Mac you want to install macOS Catalina with the bootable installer drive.
  2. Connect the external drive to your Mac via the USB port.
  3. Turn on your Mac.
  4. Hold down the Option key when it starts up.
  5. Select the external drive with macOS Catalina on it from the list of systems to start up your computer.
  6. Follow the installation process when prompted.

Questions?

Create bootable usb from dmg mac high sierra pro

Do you have any questions about how to create a bootable drive for the macOS Catalina installer? Let us know in the comments.

Updated September 2019: Updated for macOS Catalina.

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What’s up guys, in this tutorial I’m going to show you How to Create Bootable USB Installer for macOS High Sierra Windows 10 Operating System. There are few applications that you need to download in-order to successfully create a bootable USB Flash Drive to install macOS High Sierra Windows 10 PC.

Firstly, you need to download TransMac application as we will use this to write files onto flash drive. Once you have downloaded and installed TransMac, run the application.
TransMac is a Paid Application. But the trial period will last for 15 days, this is more than enough for us to Create Bootable USB Installer for macOS High Sierra Windows 10.
Before you click Run, just make sure you have plugged-in your 16 GB USB Flash Drive.
Now, Click Run and proceed with the trial of 15 Days. You should see the following screen once you click Run.


Right-Click on your USB Flash Drive and select the option Format Disk for Mac.
When the warning pops-up click Yes

Bootable Usb From Dmg Mac

.
TransMac will now ask you to name your ISB Drive. I will name my USB Drive as “USB Installer“, but you can name it anything you like. After you Name the USB Drive click Create Bootable Usb From Dmg Mac High Sierra

Create Bootable Usb From Dmg Mac Sierra

OK.
Click Yes, when TransMac will give you the Overwrite warning.

Now, just wait for few moments, as the formatting process is going on.


Once the formatting is successfully completed you should get this following confirmation. If it is not a success, please follow the steps again and format your flash drive.
Click Ok, and now right-click on your USB Flash Drive again and select the option Restore with Disk Image.

Create Bootable Usb From Dmg Mac High Sierra Vista


Click Yes, when TransMac gives you a warning for Overwriting.Next Step is to Select the dmg file for macOS High Sierra. You would need an Mac to download the macOS High Sierra Installation file from Apple Store.
To locate the DMG File, follow these steps
After you have downloaded the High Sierra app, locate the InstallESD.DMG from the installer.

Create Sierra Bootable Usb

In Applications folder: Right-click on Install MacOS High Sierra app, then choose Show Packages Contents to reveal Contents folder.

Does weapon skill effect dmg. It’s nice to have, but you’re not going to downgrade your weapon for it.

The MacOS High Sierra InstallESD.DMG is found under: Contents/SharedSupport/

Now copy this InstallESD.DMG as you need it in TransMac to Create macOS High Sierra Bootable USB Installer on Windows 10.

Ok, so lets continue with TransMac Restore Disk Image to Drive. On this screen, select the InstallESD.DMG file and click OK.
Click Yes, when TransMac Gives you the Overwrite warning.
Now the TransMac will start the process of Restoring High Sierra Image on the Flash Drive. this will take 15-25 minutes, depending on the speed of your flash drive.


Ok that should be it for this tutorial on How to Create macOS High Sierra Bootable USB Installer on Windows 10 PC.

Create Bootable Usb From Dmg Mac High Sierra Installer

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