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Macintosh101

macrumors 6502a
Original poster
Nov 23, 2017
715
1,270
Hi all, I have a new 14” MacBook Pro running Monterey. I have an external SSD that I set up to be a time machine backup- APFS encrypted with a password. I made my first few backups and everything went fine, I can see the time machine backups fine in the time machine utility, the password works fine, etc.

However, I always like to test my drives in case I needed to return this MBP for a replacement, of if the MBP failed etc and I needed to restore from the time machine backup on a new machine.

First of all I tested the drive in the Migration utility. The utility recognises the drive and the password, but then says it cannot use the data to migrate as: “The selected source cannot be
used for migration. Volume does not contain an installation of macOS or OS X.
” Does anyone know why I’m getting this message?

Second, if I go into Recovery Mode, the recovery utility again recognises the external backup drive and asks for the password. When I enter the password however, the drive disappears from the list of drives completely, immediately after entering the password , meaning that if I needed to I would not be able to do a restore.

Any ideas about what is happening here? I’m completely confused!
 
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