Bootable USB Mac OS X Windows Tutorial…
#1 Download and install a copy of TransMac, which is the software that will make everything happen. 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. (Though, if you want to support the developer, you can purchase the full version.)
#2 Insert the USB drive that you’ll use to fix your installation of OS X. Remember that all the data in the USB will be erased. Make sure you take off any important documents.
#3 Right-click the TransMac software icon and Run as administrator. You’ll be prompted toEnter Key or Run, because we’ll be using it once, click Run.
#4 On the left pane, you’ll see all the Windows PC drives listed, right-click the USB driveyou’re intending to use to re-install Apple’s OS and click Restore with Disk Image.
#5 Select Restore with Disk Image option on the left side panel and get warning dialog box, click Yes. and follow the on scree instruction you got your mac os bootable