http://www.macworld.com/article/2981585/operating-systems/how-to-make-a-bootable-os-x-10-11-el-capitan-installer-drive.html

http://www.macworld.com/article/2990837/storage/how-to-format-a-startup-drive-in-el-capitan.html

http://www.macworld.com/article/1167870/software-system/hands-on-with-mountain-lions-os-x-recovery-and-internet-recovery.html

 

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