This is why it’s recommended that you make a Mac OS X bootable USB when your Mac is in working conditions. If you’re still using a Mac OS X the time will come when your computer won’t boot, or a problem may arise where you can’t take control of the device, and booting from an OS X installation media will be required.
Step 1: From the 'Distribution' section at the top of the software, choose the required Linux distribution. Once you have made sure that the utility is installed on your Mac, follow the steps below to burn ISO or DMG to USB. If you have not downloaded the software you are licensed to, you can download the software at. Burn an ISO or DMG to Removable Media - Mac This page provides instructions for burning an.iso image file (except for the Windows operating sytem) to a CD, DVD or Flash Drive in the Mac partition.