Jun 11, 2015  How to Make Bootable USB drive with.DMG for Tiger, Leopard, Lion, Mountain Lion, Mavericks OS X. Can I make a bootable dvd usb drive with.dmg file. Make Bootable USB. Dec 16, 2019  How to create a bootable installer for macOS. MacOS Sierra downloads as a disk image that contains a file named InstallOS.pkg. Open this file and follow the onscreen instructions. It installs an app named Install macOS Sierra into your Applications folder. Connect the USB flash drive or other volume that you're using for the bootable.

If your Mac suddenly refuses to boot up properly, you might need bootable macOS install USB to make repairs. But how do you create such a disk if all you're left with is a Windows 10 computer? Fortunately, there's a great tool that you can use for free to create bootable macOS media on a USB drive in a Windows 10 environment. This article shows you how to download a macOS DMG file, format a USB drive using a GUID Partition Table, burn the DMG to the drive and boot your Mac from the USB. All the steps except the last one are done on a Windows 10 machine.

Macmake A Bootable Usb Fro Dmg File

Part 1: Download macOS or Mac OS X DMG File

The first step is to get the DMG disk image file for the version of macOS that you want. You can get a copy of the latest macOS version from Apple download portal or App Store here. There are also several other direct download sites that offer various versions of Mac OS X in DMG format rather than the standard APP format that runs on Mac. Since you're working in a Windows environment, you need the DMG rather than the APP file.

Bootable Usb Creator Mac

Part 2: Format USB Drive to GPT

Mostly, the USB drive was formmated to FAT32 in default when being shipped out from the factory. However, FAT32 can be only used for installing OS with legacy BISO, which doesn't work for macOS. So the next step is to format your USB drive in the GPT partition style in order to burn installation files to the desired USB drive. You can do this in Command Prompt as admin. In elevated Command Prompt (Ctrl+Shift+Enter), input the following series of commands followed by Enter after each line:
List disk
Select Disk X (X stands for the USB drive name that appears after the previous command)
Convert GPT
Create partition primary

They are 7-Zip and DMG Extractor. That means when you open it you can navigate through all your disks and their contents using 7-Zip user interface.In order to open your DMG file navigate to it using 7-Zip file navigation interface and click on the file name. You can also type a path to your file using an address bar at the top or select File-Open to open a file at specific location.This will open DMG file contents and you will be able to see what is inside it.7-Zip will show file sizes, packed file sizes, created, modified and accessed dates for all files in DMG archive.If you want to extract part of the DMG archive or all of it click on “Extract” button in a toolbar. Widowmaker dmg on full charge online. In order to open DMG file on Windows you will need a special software which has support for this format.There are two applications which have the most comprehensive support for DMG file format. 7-Zip could be downloaded from while DMG Extractor is available from.Open DMG file with 7-Zip7-Zip application has functionality similar to one of file explorer.

Part 3: Create Bootable macOS USB from Windows 10

Make A Bootable Usb From Iso

Macmake A Bootable Usb Fro Dmg File

You have now formatted the partition of USB drive. It's time to download TransMac for Windows. Although this is a premium software, you can use the initial free trial period to create a bootable macOS USB drive on Windows 10. After installing the application, follow the sequence of steps shown below:

Step 1: Right-click the icon and select Run as Administrator from the contextual menu. Choose Run when prompted.

Step 2: Insert your formatted USB drive, and you will be able to see it in the TransMac software on the left panel.

Step 3: Right-click the USB and select Restore with Disk Image in the contextual menu. Click Yes in the warning popup.

Step 4: You will see a window that says Restore Disk Image to Drive. Here, select your DMG file in the dropdown menu and click OK.

Depending on the system configuration, this can take anywhere from a few minutes to a couple of hours. Once the progress bar is at 100%, a bootable USB is ready.

Mac Create Bootable Usb From Iso

Part 4: Boot macOS Install USB on Mac

Now remove the USB drive and insert it into the Mac computer. To boot from the disk, you need to hold down the option key when you hear the boot chime. This will take you to the Startup Disk Manager, where you should be able to see the USB drive. It might have a different name, but as long as it is bootable, you'll be able to see it there. Once you select it, the computer will boot from the disk and the macOS installation will begin.


How To Make Mac Drive Bootable

The whole process might look a bit complicated if this is your first time, but just follow the instructions in this article and you should be fine. That being said, you need to be careful when downloading the DMG file and formatting your USB drive. If you don't do these two steps correctly, the output drive from the TransMac software won't be bootable, which means you can't install macOS using it, and you may need to do the whole thing over again.

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