I received an old company computer that they were getting rid of for free. IT person said it had been running Monterey but they had to wipe the HD for corporate reasons. I'm trying to get a fresh install of the OS on, but I'm encountering issues. I've tried fixing the drive, I've reformatted the HD to the preferred format, And I continue to get an error while installing the OS. Please Help. Thanks in advance!
Earlier Mac models
If the IT Department is correct in that this computer was running macOS 12 Monterey
This computer maybe able to run macOS 10.15 Catalina
I suggest this because OS X 10.12 Sierra and macOS 10.13 High Sierra seem to have been Pulled Out from the Apple Recovery Servers
To perform this action will require booting from a Bootable Installer.
The Bootable Installer can Only be performed on an Apple Computer
macOS Catalina 10.15 hardware requirements
This will have to be performed from a Qualifying Computer to run the version of macOS to be made on the Bootable Installer.
Example : Bootable Installer of Catalina would have to be done on a computer that Qualifies to run Catalina
Notation: If the computer being used to perform this action is Too New or Too Old to qualify to run the version of macOS - this computer can’t be used.
Alternative is, to gain access to a Qualifying Apple Computer from a family member, friend or associate.
Shutdown computer and disconnect all external drive Except the newly created Bootable Installer.
Restart and immediately hold the OPTION key until the Startup Manager appears and choose the USB Drive.
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.
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 with the newer version of macOS.
Predicated on a successful installation of Catalina 🤞
You may be able to upGrade back to macOS 12 Monterey
Reinstalling MacOS Sierra Errors
