Please be aware this forum is the iOS 10 forum, not the macOS forum. For some reason too many people post their macOS questions here. if you have a OS X related question then please post the question in one of the macOS forums:
macOS
macOS Sierra (10.12)
OS X El Capitan (10.11)
OS X Yosemite (10.10)
OS X Mavericks (10.9)
Older OS X Versions
macOS
macOS Sierra (10.12)
OS X El Capitan (10.11)
OS X Yosemite (10.10)
OS X Mavericks (10.9)
Older OS X Versions