How to reformat in recovery mode in old macOs mode

I need help pls. In resetting or reformatting my mac idk how. The inside is like those because i installed the latest macOs in recovery mode but i was stuck in "less than a minute screen" in like 5 days so idk hahaha. I just need help to reformat this.

MacBook Air 13″, macOS 12.7

Posted on Feb 7, 2025 4:24 PM

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Question marked as Top-ranking reply

Posted on Feb 8, 2025 2:01 AM

If I understand correctly ?


A newer version of macOS was attempted to be installed and it did not complete successfully ?


Now you what to revert the operating system to a previous working version of macOS ?


Am I right so far ??


Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the internet.


It will present options >> Disk Utilities >> View >> View ALL attached Drives. 


Choose the Upper Most Drive ( not the volumes indented and list below ).


The drive normally is called Apple Media or Apple SSD - that is the drive to Erase and format as APFS with the GUID Partition Map. This applies to macOS 10.14 Mojave and above. 


Once that is done >> backup out of Disk Utilities and choose install macOS. 


Follow the prompts and it may automatically reboot several time. 


Upon a final reboot - Setup Assist will present .


3 replies
Question marked as Top-ranking reply

Feb 8, 2025 2:01 AM in response to marcial162

If I understand correctly ?


A newer version of macOS was attempted to be installed and it did not complete successfully ?


Now you what to revert the operating system to a previous working version of macOS ?


Am I right so far ??


Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the internet.


It will present options >> Disk Utilities >> View >> View ALL attached Drives. 


Choose the Upper Most Drive ( not the volumes indented and list below ).


The drive normally is called Apple Media or Apple SSD - that is the drive to Erase and format as APFS with the GUID Partition Map. This applies to macOS 10.14 Mojave and above. 


Once that is done >> backup out of Disk Utilities and choose install macOS. 


Follow the prompts and it may automatically reboot several time. 


Upon a final reboot - Setup Assist will present .


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How to reformat in recovery mode in old macOs mode

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