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Apple Computing Products:
macOS - Operating System
Cannot upgrade from Snow Leopard to Yosemite
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<blockquote data-quote="chas_m" data-source="post: 1626389"><p>There are 12 models of MacBook using that model identifier:</p><p></p><p><a href="http://www.everymac.com/ultimate-mac-lookup/?search_keywords=A1278" target="_blank">http://www.everymac.com/ultimate-mac-lookup/?search_keywords=A1278</a></p><p></p><p>Which one is it?</p><p></p><p>Try signing out of the Mac App Store and signing back in. It might take a while to prepare the download, so give it an hour and see if it has started the process. It's a huge file (over 5GB!)</p></blockquote><p></p>
[QUOTE="chas_m, post: 1626389"] There are 12 models of MacBook using that model identifier: [url]http://www.everymac.com/ultimate-mac-lookup/?search_keywords=A1278[/url] Which one is it? Try signing out of the Mac App Store and signing back in. It might take a while to prepare the download, so give it an hour and see if it has started the process. It's a huge file (over 5GB!) [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Cannot upgrade from Snow Leopard to Yosemite
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