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→Installing Xcode 4 and the iOS 4 SDK
[[Image:ios4_and_xcode_dmg.jpg|The iOS 4 and Xcode 4 disk image contents]]
If this window does not open by default, it can be opened by clicking on the SDK disk drive icon on the desktop or by navigating to the Downloads directory of your home folder and double clicking on the corresponding dmg file.
Initiate the installation by double clicking on the package icon (the one that looks like an opening box) and follow the instructions until you reach the Custom Install screen:
[[Image:ios4_xcode4_custom_install.jpg|Installing iOS 4 SDK and Xcode 4]]
The default selections on this screen are adequate for most requirements so unless you have specific needs there is no necessity to alter these selections. Continue to the next screen, review the information and click Install to begin the installation. Note that you may first be prompted to enter your password as a security precaution. The duration of the installation process will vary depending on the speed and current load on the computer, but typically completes in 25 - 45 minutes.
== Starting Xcode 4 ==
