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Apple Computing Products:
macOS - Operating System
Creating a Bootable Installer for MacOS
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<blockquote data-quote="krs" data-source="post: 1813128" data-attributes="member: 67742"><p>One can actually download the full installers for all OSs from Mountain Lion up to and including Mojave, EXCEPT High Sierra.</p><p></p><p>There has to be a reason why Apple has set up the HS install the way they have - I read somewhere that some Macs require a firmware update and doing the install in two steps allows that, but I'm not sure if that is actually true.</p><p></p><p>BTW - my Mac restarted about three times during the HS install, but Apple noted when the install started that multiple starts are normal - so no issue there, just a heads up in case somedone panics when the Mac restarts on its own.</p><p></p><p>PS: I'm just reading in another thread that someone had trouble installing Mojave because they needed a f/w update.</p><p>Turned out they needed a "Helper Tool" to do the f/w upgrade.</p><p>The "Helper Tool" was part of the HS installer download from the HS patch website and showed up at some point during the download or install - don't remember exactly where.</p></blockquote><p></p>
[QUOTE="krs, post: 1813128, member: 67742"] One can actually download the full installers for all OSs from Mountain Lion up to and including Mojave, EXCEPT High Sierra. There has to be a reason why Apple has set up the HS install the way they have - I read somewhere that some Macs require a firmware update and doing the install in two steps allows that, but I'm not sure if that is actually true. BTW - my Mac restarted about three times during the HS install, but Apple noted when the install started that multiple starts are normal - so no issue there, just a heads up in case somedone panics when the Mac restarts on its own. PS: I'm just reading in another thread that someone had trouble installing Mojave because they needed a f/w update. Turned out they needed a "Helper Tool" to do the f/w upgrade. The "Helper Tool" was part of the HS installer download from the HS patch website and showed up at some point during the download or install - don't remember exactly where. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Creating a Bootable Installer for MacOS
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