How to Create a Live Bootable Flash Drive for CentOS on a Mac

Open the UNetbootin website at UNetbootin.SourceForge.net in your Web browser.
Click the “Download (For Mac OS X)” link on the page and save the file to your Mac
Double-click the downloaded UNetbootin ZIP file. Your Mac automatically unzips its contents to the current folder.
Double-click the “UNetbootin.app” file to open UNetbootin.
Click “Distribution” at the top of the UNetbootin window, select “CentOS” from the “Select Distribution” box and select your desired version of CentOS from the “Select Version” box.
Insert the USB flash drive into a USB port on your Mac and select it from the “Drive” box at the bottom of the UNetbootin window.
Click “OK.” UNetbootin automatically downloads your selected version of CentOS, converts it and creates a live CentOS flash drive. You can restart your Mac or other computer to boot from the CentOS flash drive.
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