To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.

Learn how to upgrade to macOS Big Sur, the latest version of macOS.

Check compatibility

The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier.

If a macOS can't be used on your Mac, the App Store or installer will let you know. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:

• macOS Catalina 10.15 hardware requirements
• macOS Mojave 10.14 hardware requirements
• macOS High Sierra 10.13 hardware requirements
• macOS Sierra 10.12 hardware requirements
• OS X El Capitan 10.11 hardware requirements
• OS X Yosemite 10.10 hardware requirements

Download macOS using Safari on your Mac

Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.

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• Don’t use Launchpad to do this. Launchpad doesn’t allow you to access the shortcut menu. Control-click the app icon, then choose Open from the shortcut menu. The app is saved as an exception to your security settings, and you can open it in the future by double-clicking it just as you can any registered app.
• Insert your USB drive into a free port. Step 2: Insert USB Drive and Import DMG File. Step 3: Start Burning DMG to USB. Oct 28, 2011 DMG is a disk image format used on Mac OS X and it is difficult to open on Windows computer. So, the guide below will let you people give a way to open DMG files on Windows through a free utility name HFSExplorer.

• macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
• macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
• macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion

Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.

Drop it in the blank area below the drive names on the left panel. Step 3: You can now insert your USB drive and wait for it to appear in the drives list. Next, click on your mounted DMG file on the left panel and click on ‘Burn' in the top toolbar. Open, view, read, and extract data from multiple Mac Disk image.dmg files in Windows OS.

• macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
• OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
• OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard

To create a bootable USB drive from a DMG file on Windows, you will need to have the right utility. That's because DMG is not native on Windows. It is the Mac equivalent of an ISO file that has been in use since Apple transitioned from the IMG format with Mac OS X. A DMG file, like ISO, can be used to install macOS operating system or Mac apps. If the Mac computer was broken or crashed and couln't get into the system, but you only have access to a Windows PC, there's still a way to make a bootable macOS install USB on Windows.

This article looks at three applications that you can use to create a bootable USB drive from a DMG file in Windows. All of them have their advantages and disadvantages, which we have highlighted. You can make the best choice for you based on the information provided below. They are in no particular order of preference.

DMG Editor - Make Bootable USB from DMG File on Windows

It is not easy to find an user-friendly application when it comes to make bootable macOS Install USB. That's the reason why we spent months to develop such an app. Our latest product, DMG Editor, is a fairly robust application for creating bootable USB from a DMG file. And it works well on both Windows and Mac platforms.

It is packed with modern UI and the steps are very step to follow. After several mouse clicks and wait a couple of minutes, a bootable macOS USB is ready for OS installation or system repair. You won't find any other applications on Windows that is better than UUByte DMG Editor!

Step 1: Download UUByte DMG Editor setup.exe from this website and follow the prompt to install the software on a Windows PC. Currently, it works well on Windows 10, Windows 8 and Windows 7.

Step 2: After installation, UUByte DMG Editor will be opened automatically. And you will see three options on the main screen. At this time, click 'Burn' tab And you will be lead to a new window.

Step 3: Insert an USB drive to Windows PC and the name will show up at the right side of USB icon. If the drive name was wrong, you can click 'Change' button to pick up the right device. Next, click 'Browse' button to add the .dmg file into the program.

Step 4: When the dmg file is loaded from local hard drive, click 'Burn' button to start burning dmg to USB drive. This process will be finished in less than 10 minutes and you have to wait before you can do anything with the device.

You will be notified when the burning task is completed. Now follow the link listed on the screen to start installing macOS from USB drive

Convert DMG to ISO and Create macOS Boot USB from Windows

Since ISO is a better format for Windows, you can also convert the DMG to the ISO format and then use the ISO disk image to create the bootable USB. Please note that you can't boot your Mac from bootable USB made from an ISO file, which means you'll have to convert it back to DMG prior to that. Still, it's an effective way to create bootable media for a Mac computer. Here's how it works:

Step 1: Once you have the macOS install DMG file on a Windows PC, click on Windows + R to open the run dialog box, and type in CMD, then hit Enter. When the Command Prompt opens up, use the following command to convert the file to ISO:
hdiutil convert /path/sourceimagefile.dmg -format UDTO -o /path/targetmage.iso

Step 2: Download and install UUByte ISO Editor on your PC, insert the USB drive and launch the application.

Step 3: Click Burn button on the main screen and point to the converted ISO file. The drive will be automatically detected and click on Burn icon to burn the ISO to the USB drive.

Once the ISO is burned to the file, you can insert it into a Mac and convert it back into the DMG format. Since you're converting the file twice, there's a chance that the file could get corrupted in the process. If that happens repeatedly, then try this next method.

PowerISO: Make Bootable Mac Install USB on Windows 10/8/7

This Windows utility allows you do create bootable USB from DMG on a PC. You can also edit the DMG or extract the contents, and there's also an option to copy it to a disk. For this particular exercise, we'll show you how to use PowerISO to create a bootable USB drive on Windows without having to convert the disk image into another format like ISO.

Step 1: Download and install the application on your PC.

Step 2: Insert your USB drive and launch PowerISO.

Step 3: In the Tools menu, select 'Create Bootable USB Drive… '. You will need to give admin privileges to the software. Alternatively, you can run the program as admin when you launch it.

Step 4: Select the USB drive in the section called Destination USB Drive.

Step 5: Leave all other default as they are and click on 'Start' to burn DMG to the USB drive.

You should be able to see the progress, and a new popup will appear when the bootable media is ready. You can now eject the media and use it to run the DMG on a Mac computer.

Conclusion:

Apple Mac Os Dmg File

Os X Dmg File Download

All of these methods are workable, so select the right one for you based on your level of knowledge and your preference.