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Discussion Starter · #1 ·
Ever since the geniuses at the Apple Store 'upgraded' my wife's MBA to Monterey, we've had nothing but problems.

HDD don't play well with APFS so there isn't even that option in Disk Utility.

Once the 2TB HDD was erased, partition was greyed out. Looks like Disk Utility defaults to Master Boot Record. Turns out it requires GUID.

AppleCare techs didn't know that. Two hours into the afterlife...
 

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Ever since the geniuses at the Apple Store 'upgraded' my wife's MBA to Monterey, we've had nothing but problems.
What year and model is your wife's MacBook Air??? Is it actually running and booting from the Monterey macOS installed version???

What actual problems are you experiencing??? Are they only to do with the external Seagate drive???

What are you attempting to do with the external Seagate drive???

EDIT: you might be interested in reading their article:
Will my Seagate drive work with macOS 12 (Monterey)?

It looks like most recent drives should work without much problem.


- Patrick
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Discussion Starter · #3 ·
Thanks, Patrick. 2019 MBA. Booting & running fine.

Before Monterey, Seagate Portable (on the list) partitioned for Time Machine.

After repair & 'upgrade', I erased the partition. Time Machine backup failed. (Sorry, can't recall the error message.)

I believe the Erase process in Disk Utility reverted to Master Boot Record (or perhaps it was my mistake)

In any case, that needs to be GUID to use TM.
 
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