Mac OS Installer retail Version of Yosemite, El Capitan or Mac OS Sierra, choose one you desire to make the bootable USB. Insert the USB drive into the Mac and launch Disk. Using a Mac with at least OS X 10.6.8 installed, access the Mac App Store and download the Lion (10.7) or Mountain Lion (10.8) app installer. Starting with Disk Drill 3, anyone can create a bootable Mac OS X drive in a matter of minutes. It'll make your Mac boot from USB in just a few clicks. Disk Drill is by far the most convenient and up-to-date macOS bootable file rescue solution. Set it aside, calm down and download a bootable data recovery app using any other computer.
