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Apple Computing Products:
macOS - Operating System
MacBook Pro A1278 macOS Instillation Issues?
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<blockquote data-quote="Rod" data-source="post: 1882619" data-attributes="member: 204485"><p>Okay, maybe you have found an answer already but Jake already gave you the best solution. </p><p>If you have one working computer now download a compatible MacOS X version your other device can run from the link Jake provided then Quit it if it tries to run.</p><p>We have already established High Sierra is as high as you can go.</p><p>Download a Bootable macOS installer creator app like DiskmakerX or Instal Disk Creator (<a href="https://macdaddy.io/?utm_source=app_idc" target="_blank">MacDaddy.io</a>)</p><p>Use a USB thumb drive of say about 20GB to create a USB Bootable MacOS Installer.</p><p>Boot your device from it and in the window that comes up or the menu find and select Disk Utility.</p><p>Use disk utility to erase the SSD at the Media level. Name (default), Reformat (Mac OS Extended, Journaled) and Map (GUID) the drive.</p><p>Now go back to the installer and instal your fresh version of MacOSX.</p><p>You should end up at the setup assistant.</p></blockquote><p></p>
[QUOTE="Rod, post: 1882619, member: 204485"] Okay, maybe you have found an answer already but Jake already gave you the best solution. If you have one working computer now download a compatible MacOS X version your other device can run from the link Jake provided then Quit it if it tries to run. We have already established High Sierra is as high as you can go. Download a Bootable macOS installer creator app like DiskmakerX or Instal Disk Creator ([URL='https://macdaddy.io/?utm_source=app_idc']MacDaddy.io[/URL]) Use a USB thumb drive of say about 20GB to create a USB Bootable MacOS Installer. Boot your device from it and in the window that comes up or the menu find and select Disk Utility. Use disk utility to erase the SSD at the Media level. Name (default), Reformat (Mac OS Extended, Journaled) and Map (GUID) the drive. Now go back to the installer and instal your fresh version of MacOSX. You should end up at the setup assistant. [/QUOTE]
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Apple Computing Products:
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MacBook Pro A1278 macOS Instillation Issues?
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