How to quickly create a macOS bootable USB on Windows 10 • Pureinfotech

It doesn’t matter if you use macOS or Windows 10 (or Windows 11). It’s only a matter of time until your device refuses to boot, which can happen for a variety of reasons, including (and not limited to) file errors, hardware failures, and buggy updates. If something unexpected happens to your Apple computer, you can use a macOS bootable USB with installation media to repair it.

This is one of the main reasons why you should consider creating a macOS bootable USB when your device is working properly. However, if none of your devices (MacBook, MacBook Air, MacBook Pro, iMac, Mac Pro, or Mac Mini) aren’t working when you need them most, you can use your PC to rescue your Apple device. mine. You can use a Windows 10, Windows 8.1 or Windows 7 device to quickly create USB bootable installation media to reinstall macOS Monterey, Big Sur, or Catalina on your Mac.

In this instruct, you’ll learn the steps to create a macOS Monterey bootable USB installation on Windows 10, which you can use to reinstall or upgrade Apple Operating Systems.


Before you continue, you’ll need the following:

  • Broken Mac computer running Mac OS (version 10, 11, 12 or higher).
  • Trial version of TransMac software.
  • A high-quality USB flash drive with 16GB of storage.
  • Copy of macOS (DMG file).

Create macOS Bootable USB Installation Media

To create a bootable USB drive with macOS, use these steps:

  1. Download and install TransMac on Windows 10.

    Notebook: This is paid software but gives you a 15-day trial, which is more than enough time. (If this works for you and you want to support the developer, you can purchase the full version.)

  2. Connect the USB flash drive. (If you have any data on the flash drive, be sure to make a backup copy as everything on the drive will be erased.)

  3. Right click on TransMac application and select Run as administrator Selection.

  4. Click Run button. (If you use the trial version, wait 15 seconds.)

    TransMac on Windows 10
    TransMac on Windows 10

  5. Right click on the USB flash drive, select Disk Formatting for Mac from the left navigation pane.

    Format Disk for Mac Using GPT Partition
    Format Disk for Mac Using GPT Partition

    Notebook: You’ll want to do this before creating the bootable media because it’s most likely already formatted with a Windows device. If it is, it is most likely using an MBR partition and the USB drive needs a GPT partition to work on the Mac.

  6. Click correct to format the drive on the warning message.

    Format warning
    Warning format

  7. Confirm the name for the drive. Eg, “MacOS Bootable USB.”

  8. Click YES button.

    Format USB for macOS with label
    Format USB for macOS with label

  9. Click correct button.

    Override warnings
    Override warnings

  10. Click YES button.

  11. Right click on the USB flash drive and select Restore with a disk image from the left navigation pane.

    Restore TransMac with Disk Image option
    Restore TransMac with Disk Image option

  12. Click correct to confirm the USB flash drive data deletion.

    Remove warning
    Remove warning

  13. Click browse right button.

  14. Choose .dmg file with the macOS installation files.

    Select the macOS dmg file to create a bootable USB drive
    Select the macOS dmg file to create a bootable USB drive

  15. Click Open button.

  16. Click YES button.

  17. Click correct button.

    TransMac generates macOS USB boot drive warning
    TransMac generates a macOS USB bootable drive warning.

After completing the steps, you can now insert the USB flash drive on your Mac computer to install, reinstall, or upgrade the operating system to the latest version of macOS, be it Sierra, Catalina, Big Sur, Monterey or higher.

Create a GPT partition on a USB flash drive

If the USB flash drive doesn’t work with TransMac, it could still be a partitioning problem. In this case, you may need rework, do it again the whole process again. However, this time, you should follow these steps to use Diskpart command line utility on Windows 10 to create the appropriate GPT partition, then follow the instructions above.

To create a GPT partition on a removable drive, use these steps:

  1. Open Begin.

  2. Search Command prompt, right click on the top result and select Run as administrator Selection.

  3. Type diskpart command and press Into the.

  4. Import list disk command to see all the drives connected to your computer and press Into the.

  5. Type select disk command with the specified number for the USB flash drive (for example: select disk 4) and press Into the.

  6. Import clean command and press Into the.

  7. Type convert GPT command and press Into the.

  8. Import create partition primary command and press Into the to complete the process.

Once you’ve formatted your USB flash drive with a GPT partition, you can use the instructions mentioned above to use TransMac to create bootable media, but skip this time. steps from 5 to 10 and continue step 11.

Once the process is complete, which can take up to an hour, connect the USB flash drive and power on your Mac and hold down Selection , select the USB drive to start the macOS installation.

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