Once you have your USB boot drive, you can boot up from the drive by inserting the USB drive into your Mac and then pressing the option (⌥) key as soon as your computer loads. Downloading directly from their server was super slow so I downloaded the DMG file via the torrent file available instead. If you search online for “OS X DMG Download” you will find many websites that host the DMG file for your Mac’s operating system. That’s more than enough time to do what you need to do. The application costs a one off fee of £59, however you can use Transmac without any restrictions for fifteen days. Select disk X (where X is the number of your USB flash drive) Open command prompt as an administrator and enter the following commands to convert your USB drive from MBR to GPT fomat: The one I used in my tutorial was 16GB in size, but it will work with any flash drive that is 8GB in size or higher. In order for this to work you should have a USB flash drive. This tutorial will help you create a bootable USB flash drive for your Mac on a Windows computer.
