Galaxy S not mounting on MBP

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http://androidforums.com – Recently I found my old Galaxy S 4G from T-Mobile gathering dust in a desk drawer. I charged it up, SIM unlocked it (I've switched carriers) and I'd like to use it as my go-to phone until I'm eligible for an upgrade. (Why all this trouble? Because quite frankly, even at two years old and counting, the SGS4G is still better than my iPhone.) It's still loaded with Froyo. But I've hit a snag. My Macbook Pro (early 2012) absolutely will not recognize this device under USB mass storage or Media Player. I heard someone say that rooting affects the ability of the device to be recognized via USB; (General)