this doc is about sdk.

OS recovery help
................\Can't get rEFIt to boot after install (Ubuntu + OSX on macbook pro) - Unix & Linux Stack Exchange.htm
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................\Dual Booting Linux and OS X on a MacBook Air.htm
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................\How to install Ubuntu on MacBook using USB Stick - Community Help Wiki.htm
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................\macosx - Cannot boot into Refit (to choose Ubuntu) on Mac after Yosemite Upgrade - Ask Ubuntu.htm
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