Upgrade to Yosemite 10.10.5

I have an ook of MCB 2012 Pro works on OS Lion 10.7.5. I want to upgrade to Yosemite 10.10.5. I'm hesitant to upgrade because I don't want to lose my photos, links, documents folders in my bookmarks, etc. What I'd be aware of because I do this approach?

Unless you've downloaded the installer of Yosemite, it is no longer available. You shouldn't lose any data, but make a backup, best 2 separated on 2 discs.

Tags: Mac OS & System Software

Similar Questions

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    |

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    =========================================================

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    +-< physical="" volume="">

    |   ----------------------------------------------------

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    ----------------------------------------------------------

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    Encryption type: no

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    Fully secure: No.

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    ------------------------------------------------------------------------

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    Screen Shot 2014-11-11 at 11.07.00.png

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