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How to install OS X 10.11 El Capitan on external drive

OS X 10.11_El Capitan icon 256x256Learn how to install Mac OS X 10.11 El Capitan on an external drive. Before upgrading to the latest Mac OS X, it is often useful to install Mac OS X on an external hard drive for testing. Especially, if you want to get a very first view on a Mac OS X 10.11 developer preview or public beta without replacing the final release version of the operating system. The following step-by-step tutorial works in the same way for installing Lion, Mountain Lion, Mavericks and Yosemite (final release versions, developer previews, public beta) on an external volume. Update: Installing macOS 10.13 High Sierra or macOS 10.12 Sierra is working in the same way.

How to install OS X 10.10 Yosemite on external drive

Mac OS X 10.10 Yosemite iconLearn how to install Mac OS X 10.10 Yosemite on an external drive. Before upgrading to the latest Mac OS X, it is often useful to install Mac OS X on an external hard drive for testing. Especially, if you want to get a very first view on a Mac OS X 10.10 Yosemite developer preview without replacing the final release version of the operating system. The following step-by-step tutorial works in the same way for  installing Lion, Mountain Lion or Mavericks (final release versions and developer previews) on an external volume.

iCloud push subscribed calendars: Delete subscription

iCloud icon 120x120Subscribed calendars are pushed from Mac to iPhone and iPad via iCloud. If you’ve subscribed to a calendar using the Calendar app in macOS 10.13 High Sierra, macOS 10.12 Sierra, Mac OS X 10.11 El Capitan, Mac OS X 10.10 Yosemite, Mac OS X 10.9 Mavericks or Mac OS X 10.8 Mountain Lion, or the iCal app in Mac OS X 10.7 Lion, you can use iCloud to push your subscribed calendars to all of your Macs and iOS devices (iPhone, iPad, iPod touch).