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My install of macOS Monterey completes with no errors. But when it restarts, it's still macOS Big Sur 11.6.2. I have a MacBook Air (13-inch, 2017). I have tried downloading the installer a couple of times, as well as installing from Safe Mode. What else can I do?
MacBook Air
Do you have enough free disk space?
If upgrading from macOS Sierra or later, your Mac needs 26GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44GB of available storage.
Also uninstall any antivirus and "cleaning" apps before trying installing again.
Are you using File Vault to encrypt the disk? If so turn it off and then try after the de-encrypting is complete. That can take many hours.
Boot to Recovery and repair/First Aid the startup disk. You can't repair/First Aid the disk you booted from.
About macOS Recovery on Intel-based Mac computers - Apple Support
If disk OK then delete the existing Monterey installer and boot to Safe Mode, which takes minutes and redownload the installer and try again.
Do you have enough free disk space?
If upgrading from macOS Sierra or later, your Mac needs 26GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44GB of available storage.
Also uninstall any antivirus and "cleaning" apps before trying installing again.
Are you using File Vault to encrypt the disk? If so turn it off and then try after the de-encrypting is complete. That can take many hours.
Boot to Recovery and repair/First Aid the startup disk. You can't repair/First Aid the disk you booted from.
About macOS Recovery on Intel-based Mac computers - Apple Support
If disk OK then delete the existing Monterey installer and boot to Safe Mode, which takes minutes and redownload the installer and try again.
I have about 300 GB of free space;
FileVault is off;
Startup disk repair is not necessary. Disk is OK;
I have tried to install in Safe Mode using different downloads of the installer.
Same problematic result. Anything else I can try?
Same. I've tried 5x, same outcome. Missing my PC at this point.
Install of macOS Monterey completes with no errors, but doesn't actually install.
