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Apple Computing Products:
macOS - Operating System
how to find Mac OS
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<blockquote data-quote="Lifeisabeach" data-source="post: 1921779" data-attributes="member: 38864"><p>You "may" have to temporarily install to an external drive; boot from that; wipe the internal; then install macOS to it. Here are a couple discussions though to review:</p><p></p><p>[URL unfurl="true"]https://apple.stackexchange.com/questions/314099/disk-locked-macos-reinstall[/URL]</p><p></p><p>[URL unfurl="true"]https://discussions.apple.com/thread/5952885[/URL]</p><p></p><p>EDIT: you also most certainly do not have a 2015 MacBook. That model identifier was used from 2008-2012. Which is... really odd. The list of models is in the link below, but you can plug in your serial number into the search box in place of the model identifier to narrow it down.</p><p></p><p>[URL unfurl="true"]https://everymac.com/ultimate-mac-lookup/?search_keywords=a1278[/URL]</p></blockquote><p></p>
[QUOTE="Lifeisabeach, post: 1921779, member: 38864"] You "may" have to temporarily install to an external drive; boot from that; wipe the internal; then install macOS to it. Here are a couple discussions though to review: [URL unfurl="true"]https://apple.stackexchange.com/questions/314099/disk-locked-macos-reinstall[/URL] [URL unfurl="true"]https://discussions.apple.com/thread/5952885[/URL] EDIT: you also most certainly do not have a 2015 MacBook. That model identifier was used from 2008-2012. Which is... really odd. The list of models is in the link below, but you can plug in your serial number into the search box in place of the model identifier to narrow it down. [URL unfurl="true"]https://everymac.com/ultimate-mac-lookup/?search_keywords=a1278[/URL] [/QUOTE]
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Apple Computing Products:
macOS - Operating System
how to find Mac OS
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