Why do I get more space after I updated my system?

Recently, I updated my Retina MacBook Pro from Mac OS X 10.9 to Mac OS X 10.10. Then I found that before the update, there were around 20GB space available, but after the update, there were around 30GB space available.

Anyone knows why this happened?


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What Girls Said 1

  • I guess the update deleted some unnecessary things


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