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Question: what do i need to do before upgrading from mac os yosemite to mac os high sierra?

i want to upgrade my os from yosemite to high sierra? good idea? what steps do i need to take first and am i likely to lose any thing my mac if i do?

MacBook Pro with Retina display, OS X Yosemite (10.10.5)

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Follow Apple's upgrade instructions, here: Upgrade to macOS High Sierra - Official Apple Support.


You might also find the following useful, which describes the practice I have observed for many years: Upgrading macOS without fear.

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Question marked as Apple Recommended

Mar 15, 2018 12:05 PM in response to awusiq In response to awusiq

Follow Apple's upgrade instructions, here: Upgrade to macOS High Sierra - Official Apple Support.


You might also find the following useful, which describes the practice I have observed for many years: Upgrading macOS without fear.

Mar 15, 2018 12:05 PM

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Question: what do i need to do before upgrading from mac os yosemite to mac os high sierra?