1. Let the installer complete, when finished you will be informed that the process has completed; Once you have created the USB boot installer drive for macOS High Sierra, you can either launch it immediately to install macOS High Sierra on the current Mac, reboot and startup from the USB installer drive, or eject it and use it on another Mac.
  2. Download Install Disk Creator by clicking on the link above. When the download is done, you can move it over to your Applications folder. Then follow these steps to create your bootable macOS High.

Macbooks or iMacs hardly require reinstallation of their Mac OS, but when they do then it’s a fairly difficult process especially if your secondary computer is Windows. Reinstalling Mac OS is a time-consuming process and requires a lot of patience that’s why recommend doing this process in your free time or weekends.

Right Click on your USB drive option in TransMac and select Format Disk for Mac After that, right-click the USB Drive and select Restore with Disk Image Point to your Mac OS.dmg or.iso file by clicking the add button. After that TransMac will create bootable Mac OS USB within few minutes.

To get started with you require a USB drive with at least 8GB storage (16GB recommended). Then you need a working Mac OS ISO or DMG Installation Image. You can download it from the Apps Store or you can find Mac OS Image at ISORIVER.

There are 2 Methods to Create a Bootable USB drive of Mac OS on your Windows PC.

Method 1: Using TransMac

Startup
  1. Download TransMac’s latest version for Windows from this link.
  2. Connect your USB drive
  3. Right Click on your USB drive option in TransMac and select Format Disk for Mac
  4. After that, right-click the USB Drive and select Restore with Disk Image
  5. Point to your Mac OS .dmg or .iso file by clicking the add button.
  6. After that TransMac will create bootable Mac OS USB within few minutes.
  7. Then you can insert it into your Mac, hold down the option key while turn on and boot your system with this USB.
Startup

Method 2: Using PowerISO

Download mac os startup disk imager

Another disk image utility that you can use is PowerISO. It can be used for burning both ISO files and DMG files to USB to create a bootable drive. Follow the steps below to Create a Bootable Mac OS USB on Windows PC.

Step 1: Firstly Download PowerISO and install it in your Windows PC. Launch the app and insert a USB drive into your computer.

Download

Download Mac Os Startup Disk Iso

Step 2: Import the DMG / ISO file directly by clicking on ‘Burn’ in the toolbar.

Step 3: In the Burn window, select the DMG / ISO file from the Source File section.

Step 4: You can modify the settings to adjust burn speed. The default will be set to the maximum, so you can reduce that.

Step 5: You can choose to finalize the disk and verify it. Any errors in the bootable USB will show up at that point.

Mac Os Sierra Install App

Step 6: Now click on “Burn” and wait for the progress bar to reach 100%.

After the successful creation of Bootable Mac OS USB, boot your Macbook from this USB drive by clicking the option button during bootup and select this USB drive.

Watch this Video Tutorial

That’s it for the tutorial If you face any issues or had any query then please let us know in the comment section below. You can also send us an email via the contact us page for personalized support.