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dmfresco

macrumors regular
Original poster
Sep 8, 2002
234
53
Ann Arbor
I just pre-ordered a M5 MBP. It will replace a circa 2021 M1 MBP, which is running the latest build of Tahoe 26 public beta. Will migration assistant work if the computer is not running the same build of Tahoe 26?
 
I just pre-ordered a M5 MBP. It will replace a circa 2021 M1 MBP, which is running the latest build of Tahoe 26 public beta. Will migration assistant work if the computer is not running the same build of Tahoe 26?
No. Create an account on the new machine, upgrade to the latest beta, then reset the computer and do the migration.
 
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My suggestion (and it will be different from the others).

Have an external backup drive "in hand".
Can be created from time machine, CarbonCopyCloner, or SuperDuper.
(I prefer CCC or SD... SD is "the easiest" if you've never used an app like that before, and it's FREE to use for this job)

Just before you unbox the new one, update your backup on the old one.

Take the new one out of the box and set it on the table.
Connect the backup.
Open the lid.

Begin setup.
When setup assistant asks if you want to migrate from another drive, YES, you do, so...
"Point the way" to the backup and give setup assistant a little time to "digest" everything.

SA will present you with a list of stuff that can be migrated.
I suggest you just accept the default (everything), and let it go.

When done, you should see your login screen on the new one, just as before.

Good luck.
 
M5 MBP won't be in your hand until October 22?

We are due for macOS 26.1 final before the end of the month.

It could be out next week. (Release candidate on Monday seems likely.) Might be easiest just to wait for 26.1, get the final build on both systems, and then do the migration.
 
One doesn't need an "exact match" of OS's.
If that was the case, migration would be impossible for those with older Macs.

Migrating from an external backup drive is "the better way".
Doing it from a cloned backup is the BEST way...
 
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