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canyonlight 04-11-2022 07:38 AM

Migration Assistant from SuperDuper! Bootable Backup Drive?
I may have to erase and reinstall macOS Monterey on my MacBook Pro (Apple silicon). The reason is that I cannot create a Time Machine backup (the system apparently "does not see" the drive I have attached to do Time Machine backups). I don't know what's wrong, but I'm afraid that when I get to Apple support they are eventually going to tell me to erase the hard drive and reinstall macOS Monterey.

I have already done just the reinstall of macOS Monterey using recovery. That didn't help the Time Machine problem.

I do have a SuperDuper! backup of the Macintosh HD hard drive.

My question is: can I use Migration Assistant to recover my applications, user account, etc, from the SuperDuper! backup if I do an erase and reinstall of the OS?

And if so, what are the steps? I understand that Apple silicon computers now use a "shared drive" scheme instead of the "Target Disk" scheme used on Intel chip machines.

Thanks in advance for your advice and recommendations.

dnanian 04-11-2022 09:04 AM

In general, erasing and installing the OS makes no sense in Monterey. The OS is sealed, and as such, it cannot be any different than it was when installed, or it basically won't boot. I can't see how this is going to help your issue.

But, yes, during FIRST BOOT of a fresh/erase install of the OS it will prompt to 'restore', and you can select your SuperDuper backup at that point (either a bootable backup or a "data volume only" backup).

But my recommendation is to diagnose the Time Machine problem without wiping the system - I can't see how that would help. (However, apart from suggesting you format as APFS and try selecting it, I'm not sure what to recommend, since - as you know - I didn't write Time Machine and haven't had this problem.)

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