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  1. #1


    Member Since
    Dec 05, 2011
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    5
    deleted systems preferences
    i accidentally deleted systems preferences. after juggling things around i managed to get the icon back on the doc, but now everything related to it in applications has the suffix .app, which i don't remember seeing before.

    what have i done wrong, does it matter, and how should i fix it?

  2. #2

    vansmith's Avatar
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    The extensions setting has nothing to do with System Preferences so you can take comfort in knowing that it wasn't something you changed there. The fix is simple: Finder > Preferences > Advanced > uncheck "Show all filename extensions."
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  3. #3


    Member Since
    Dec 05, 2011
    Posts
    5
    deleted system preferences
    i've gone to finder, then system preferences in applications, but i don't know how to get to advanced. from there i realize that i can choose to uncheck, as you said.

    i tried opening system preferences but i don't see advanced in there. i've never had to use it before.

  4. #4


    Member Since
    Dec 05, 2011
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    btw, that was a really fast reply. thanks so much.

  5. #5

    chscag's Avatar
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    Jan 23, 2008
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    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    He didn't say "Advanced in System Preferences". He's telling you to open the Finder. Then select the Finder preferences, advanced. Let us know if that works.

  6. #6


    Member Since
    Dec 05, 2011
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    finder preferences? i feel so stupid. i don't understand at all. once i open finder, i have 4 places to go: desktop, applications, documents, and my own list (or whatever it's called).

    where should i be looking?

  7. #7

    vansmith's Avatar
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    Specs:
    2012 13" MBP (2.5 i5, 8GB)
    Go to the Finder menu option:

    Screen Shot 2011-12-05 at 7.51.47 PM.jpg
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  8. #8


    Member Since
    Dec 05, 2011
    Posts
    5
    got it! okay. i unchecked all file extensions. all the extensions are gone. was there any reason i ever needed that box checked in the first place, or was that a default?

    does that mean that it really didn't matter at all that they were there? after all, as i now understand it, they're still there, they just aren't showing.


    so whatever i did/did not do didn't do anything but show the extensions. i'll try not to do that again.

  9. #9

    vansmith's Avatar
    Member Since
    Oct 19, 2008
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    Specs:
    2012 13" MBP (2.5 i5, 8GB)
    Yes, the files still have the extensions but they are simply "hidden" from view. As to why it got checked, your guess is as good as mine. It could have been set by an application or through another setting.
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