iphone - Removing iOS SDKs from OSX -

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this isn't programming question it's sdks , ide. i've accumulated ton of different xcode installs on past couple of years , hard drive full. each sdk clocking in @ around 5 gigs, , storage space getting low, have couple of questions

3 questions:

  1. can remove old ones?
  2. where stored?
  3. does newest sdk overwrite base classes previous sdks? (does nsstring.h reside in 2 different sdks or newest 1 take precedence?
  4. what beta 1, beta 2, beta 3 sdk versions? installing gm/official eliminate beta version mac?
  5. most importantly, can still target 3.0 if install 4.2 sdk? (i understand difference between base sdk , target sdk)

i want clean hard drive , have 18 gb remaining on 160 gb drive. i'd start on , reinstall osx, download fresh sdk, still have apps targeted 3.1.2 , don't want forced support 4.0.

thank you

can remove old ones?

sure.

where stored?

/developer/platforms/iphone*/developer/sdks/ usually.

does newest sdk overwrite base classes previous sdks? (does nsstring.h reside in 2 different sdks or newest 1 take precedence?

no, you're fine delete them. each sdk self contained.

what beta 1, beta 2, beta 3 sdk versions? installing gm/official eliminate beta version mac?

sometimes, can choose reinstall them though

most importantly, can still target 3.0 if install 4.2 sdk? (i understand difference between base sdk , target sdk)

yes


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