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Humbajj

Prevent APFS Conversion Through Recovery Installer?

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So I was just wondering how to prevent the APFS file system conversion when booted into a recovery installer such as Internet Recovery or standard Recovery Mode. I found a Terminal command that works when booted into the USB installer, but it doesn't work when booted into a recovery mode. 

 

This is the Terminal entry I use in a USB installer: 

/Volumes/"Image Volume/Install macOS High Sierra.app"/Contents/Resources/startosinstall --volume /Volumes/X --converttoapfs NO --agreetolicense

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While booted to the High Sierra thumb drive, go up to the "Utilities" menu and launch "Terminal", then enter the following:

/Volumes/Image\ Volume/Install\ macOS\ High\ Sierra.app/Contents/Resources/startosinstall --volume /Volumes/NameOfYourVolume --agreetolicense --converttoapfs NO --nointeraction

This will install High Sierra on your HFS formatted SSD without converting to APFS.

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