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What You Need to Know About Mac OS X Install ESD DMG and How to Make a Bootable Installer


Mac OS X Install ESD DMG Download: What Is It and How to Use It?




If you want to install or upgrade your Mac OS X to a newer version, you may have heard of a file called Mac OS X Install ESD DMG. But what is it exactly, and how can you use it? In this article, we will explain what is Mac OS X Install ESD DMG, why it is useful, and what are the requirements to use it. We will also show you how to find and extract this file from the Install Mac OS X app that you can download from the App Store or Apple website, how to create a bootable installer from it using Terminal commands, and how to use the bootable installer to install Mac OS X on your computer.




Mac Os X Install Esd Dmg Download


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What Is Mac OS X Install ESD DMG?




A DMG file is a disk image file that can be mounted as a virtual drive on your Mac. It can contain files, folders, applications, or even an entire operating system. A Mac OS X Install ESD DMG file is a special type of DMG file that contains the installer for Mac OS X Lion or later versions.


The purpose of this file is to create a bootable installer for Mac OS X on an external drive or secondary volume. A bootable installer is a startup disk that can be used to install the Mac operating system on your computer. You can use a bootable installer to install Mac OS X on multiple computers without downloading the installer each time, or to install a compatible macOS when the Finder or macOS Recovery are not available.


The Mac OS X Install ESD DMG file is located inside the Install Mac OS X app that you can download from the App Store or Apple website. The app is usually named after the version of macOS that it installs, such as Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. The app is about 6GB in size and can be found in your Applications folder after downloading.


Why Use Mac OS X Install ESD DMG?




There are several benefits of using Mac OS X Install ESD DMG to create a bootable installer for Mac OS X. Some of them are:


  • You can save time and bandwidth by downloading the installer only once and using it to install Mac OS X on multiple computers.



  • You can install a compatible macOS on a Mac that does not support the latest version of macOS, as long as the Mac meets the minimum system requirements for the macOS you're installing.



  • You can install a compatible macOS on a Mac that has a damaged or missing startup disk, or that cannot access the Finder or macOS Recovery.



  • You can create a backup of your current macOS in case you want to revert to it later.



However, there are also some drawbacks of using Mac OS X Install ESD DMG that you should be aware of. Some of them are:


  • You need a Mac that is compatible with the macOS you're downloading. For example, you cannot use a Mac that runs on an Intel processor to download and create a bootable installer for macOS Big Sur, which requires an Apple silicon processor.



  • You need an external drive or secondary volume with at least 14GB of available storage to create the bootable installer. The drive or volume will be erased during the process, so make sure you back up any important data on it before proceeding.



  • You need some technical skills to enter commands in Terminal, which is an application that allows you to interact with your Mac using text commands. If you enter the wrong command or make a mistake, you may damage your Mac or lose your data.



How to Use Mac OS X Install ESD DMG?




To use Mac OS X Install ESD DMG, you need to follow three steps: find and extract the file from the Install Mac OS X app, create a bootable installer from it using Terminal commands, and use the bootable installer to install Mac OS X on your computer. We will explain each step in detail below.


How to Find and Extract Mac OS X Install ESD DMG?




The first step is to locate and copy the Mac OS X Install ESD DMG file from the Install Mac OS X app that you downloaded from the App Store or Apple website. Here are the steps to do so:


  • Open your Applications folder and find the Install Mac OS X app that corresponds to the version of macOS you downloaded. For example, if you downloaded macOS Catalina, look for Install macOS Catalina.app.



  • Right-click (or Control+click) on the app icon and choose Show Package Contents from the menu that appears.



  • A new window will open with a folder called Contents. Open this folder and then open another folder called Shared Support.



  • Inside this folder, you will find a disk-image file called InstallESD.dmg. This is the file you're looking for. Copy it to your desktop or another location where you can easily access it.



How to Create a Bootable Installer from Mac OS X Install ESD DMG?




The second step is to create a bootable installer from the Mac OS X Install ESD DMG file that you copied from the Install Mac OS X app. You will need an external drive or secondary volume with at least 14GB of available storage for this step. Here are the steps to do so:


  • Plug in the external drive or secondary volume that you're using for the bootable installer. Make sure it is formatted as Mac OS Extended (Journaled). You can check and change this using Disk Utility, which is an application that allows you to manage your disks and volumes.



  • Open Terminal, which is an application that allows you to enter text commands on your Mac. You can find it in your Applications folder under Utilities, or by using Spotlight Search (Command+Space).



Type or paste one of the commands provided by Apple Support depending on which macOS you downloaded. For example, if you downloaded macOS Catalina, the command is: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume


  • Replace MyVolume with the name of your external drive or secondary volume. You can also rename the drive or volume to something else before entering the command.



  • Enter your administrator password when prompted. Terminal will not show any characters as you type your password.



  • Confirm that you want to erase the volume when prompted by typing Y and pressing Return. Terminal will start creating the bootable installer and show you the progress. This may take some time, so be patient.



  • Wait until Terminal says that it's done. You can now quit Terminal and eject the external drive or secondary volume. You have successfully created a bootable installer from Mac OS X Install ESD DMG.



How to Use the Bootable Installer to Install Mac OS X?




The third and final step is to use the bootable installer that you created from Mac OS X Install ESD DMG to install Mac OS X on your computer. You will need a Mac that is connected to the internet and compatible with the version of macOS you're installing for this step. Here are the steps to do so:


  • Plug the bootable installer into a Mac that you want to install Mac OS X on. Make sure the Mac is turned off or shut down.



  • Restart your Mac and hold down the Option key while it starts up. You will see a list of startup disks on your screen.



  • Choose your bootable installer as the startup disk. It will have a name like Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra, depending on which macOS you downloaded.



  • Follow the onscreen instructions to install Mac OS X on your Mac. You may need to choose a language, agree to the terms and conditions, select a destination disk, and enter your Apple ID and password.



  • Wait until the installation is complete. Your Mac will restart several times during the process. When it's done, you will see a welcome screen where you can set up your Mac.



Conclusion




In this article, we have explained what is Mac OS X Install ESD DMG, why it is useful, and how to use it. We have shown you how to find and extract this file from the Install Mac OS X app that you can download from the App Store or Apple website, how to create a bootable installer from it using Terminal commands, and how to use the bootable installer to install Mac OS X on your computer.


We hope this article has been helpful and informative for you. If you want to install or upgrade your Mac OS X to a newer version, we encourage you to try using Mac OS X Install ESD DMG to create a bootable installer for Mac OS X. It may save you time and bandwidth, and give you more flexibility and control over your installation process.


If you have any questions or feedback about this article, please feel free to leave a comment below. We would love to hear from you!


Frequently Asked Questions




Here are some of the most common questions that people ask about Mac OS X Install ESD DMG:


  • What is the difference between Mac OS X Install ESD DMG and macOS Recovery?



Mac OS X Install ESD DMG is a disk image file that contains the installer for Mac OS X Lion or later versions. You can use it to create a bootable installer for Mac OS X on an external drive or secondary volume. macOS Recovery is a built-in feature that allows you to reinstall macOS or repair your startup disk from an online source or a local recovery partition. You can access it by holding down Command+R while your Mac starts up.


  • Can I use Mac OS X Install ESD DMG to downgrade my macOS?



No, you cannot use Mac OS X Install ESD DMG to downgrade your macOS. You can only use it to install or upgrade your macOS to a compatible version. If you want to downgrade your macOS, you will need to erase your startup disk and restore it from a backup that was made before you upgraded.


  • Can I use Mac OS X Install ESD DMG on a Windows PC?



No, you cannot use Mac OS X Install ESD DMG on a Windows PC. You can only use it on a Mac that is compatible with the version of macOS you're installing. Mac OS X Install ESD DMG is designed for Mac hardware and software, and will not work on a Windows PC.


  • Can I use Mac OS X Install ESD DMG to create a virtual machine?



Yes, you can use Mac OS X Install ESD DMG to create a virtual machine that runs Mac OS X on your Mac. A virtual machine is a software application that simulates a computer system, allowing you to run different operating systems on the same device. You will need a virtualization software, such as VMware Fusion or Parallels Desktop, to create and run a virtual machine. You will also need to convert the Mac OS X Install ESD DMG file to an ISO file, which is another type of disk image file that can be used by virtual machines.


  • Can I delete Mac OS X Install ESD DMG after using it?



Yes, you can delete Mac OS X Install ESD DMG after using it to create a bootable installer or a virtual machine. You can also delete the Install Mac OS X app that you downloaded from the App Store or Apple website. However, you may want to keep them in case you need to use them again in the future. You can also compress them to save some storage space on your Mac.


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