Hello. I recently had to uninstall my macOS (Monterey) and I’ve successfully got it booted into a flash drive using another Mac and was in the process of trying to reinstall it then I got hit with the “the disk doesn’t use the GUID partition table scheme”. So I followed the instructions and went into the disk utility and changed my flash drive to that but it obviously deleted the MacOS. Do I just go back to the other Mac and boot it again? Or what’s my options?
MacBook Air
Go to your other mac
Insert the usb drive
Go to Disk Utility and partition it this way: MacOs journaled (extended)
Follow the instructions to make a bootable usb again
How to create a bootable installer for macOS - Apple Support
Go to your Mac you want to reinstall.
Press option to boot from the usb
Follow the Monterey installer
Go to your other mac
Insert the usb drive
Go to Disk Utility and partition it this way: MacOs journaled (extended)
Follow the instructions to make a bootable usb again
How to create a bootable installer for macOS - Apple Support
Go to your Mac you want to reinstall.
Press option to boot from the usb
Follow the Monterey installer
Use macOS Recovery on a Mac with Apple silicon
Copy and paste portion of the information for above link
It implies the Erase All Content and Setting was perform while already booting into the existing Installation of of Monterey
Then to Bootable Installer becomes irrelevant to the Re-Installation process IMHO
Erase and reinstall macOS
If you erase and reinstall macOS, your user accounts, network settings, and all of the files and folders on your Mac are deleted. Before you erase macOS, attempt to log back in to your system, then back up any files you want to keep by copying them to another storage device. Also, write down your network settings from Network preferences to make it easier to get connected again after reinstalling macOS.
Exactly how was this achieved ?
Was this method used --- >>> Use Disk Utility to erase a Mac with Apple silicon - Apple Support (CA)
Revive or restore a Mac with Apple silicon using Apple Configurator
Q - " Hello. I recently had to uninstall my macOS (Monterey) "
A - Exactly how was this achieved ? Details on the exact method and exact Model of MBA ? MBA Apple Silicon of MBA Intel Computer.
A - The request for type of Computer is very important as Apple Silicon method of reinstalling from a Wiped Drive is different from an Intel Based MBA
So I followed the instructions and went into the disk utility and changed my flash drive to that but it obviously deleted the MacOS. Do I just go back to the other Mac and boot it again? Or what’s my options?
It wasn’t the flash drive that was wrong, it was the drive where you were trying to install the OS.
Yes, do it again, but format the internal drive, not the flash drive.
Extra Special Notation regarding the Touch ID equipped Apple Computer.
About Startup Security Utility and Must Enable from Recovery Mode the ability to boot from External Drive Before Attempting
I used the method of downloading the os via App Store and creating a bootable usb and putting it on that. My Mac has the M1 chip so I assume it’s not Intel based.
I did it in recovery mode app. There was option to do so from one of the drop down menus in the top left corner. It was not through disk utility
Reinstall MacOS
