It could take one or two hours to complete the process depending on your computer and other variables.
Use the Restore Disk Image to Drive dialog box to browse for the DMG file with the installation files for Mac OS X Yosemite in this case, and click OK to create a bootable USB of the operating system.On the left pane, you’ll see all the Windows PC drives listed, right-click the USB drive you’re intending to use to re-install Apple’s OS and click Restore with Disk Image.You’ll be prompted to Enter Key or Run, because we’ll be using it once, click Run. Download the Application from the Mac App Store using your Apple ID on any Mac or functional computer running Mac OS X 10.6.8 or later. Right-click the TransMac software icon and Run as administrator. The full operating system is a free download for anyone who has purchased Mac OS X Snow Leopard, Lion, or Mountain Lion, or a Mac preloaded with Mavericks.Make sure you take off any important documents. Remember that all the data in the USB will be erased. Insert the USB drive that you’ll use to fix your installation of OS X.(Though, if you want to support the developer, you can purchase the full version.)
TransMac is a paid software, but it has a 15-day trial solution, that give us more than enough time to move the DMG files to the USB drive from Windows. Download and install a copy of TransMac, which is the software that will make everything happen.Type the create partition primary and press Enter to complete.Īfter converting the USB flash drive from MBR to GPT format, you can use the steps below to create a bootable USB installation media to install Mac OS X.