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I didn't install reFIT on my Mac before booting to Ubuntu and now want to go back to macOS, but it won't let me hold option key, and MacOS doesn't show up
Need download link for Firmware MBP11.0055.B03 (rEFIt / BootCamp / Bootable W7 USB | MacRumors Forums
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dual boot - Issue on booting from rEFInd using USB -- make sure you have the latest firmware update installed - Ask Ubuntu
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