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hooper2

macrumors member
Original poster
Oct 31, 2008
92
9
I've been holding out on updating to Catalina on my 2012 MBA. Which has been fine. But with a new computer coming that is on Catalina, should I upgrade my MBA to Catalina before doing the migration assistant? Any benefits one way or the other?

Thanks!
 
You should be fine migrating from TimeMachine backup. I don’t think you necessarily need to upgrade your 2012 MBA to Catalina first.
 
I set up my 2020 MBA from a Mojave TM backup of my 2015 rMB. Worked fine.

No need to update the 2012 MBA IMHO.

I would suggest to force a fresh full TimeMachine backup of the 2012. Also be aware the migration assistant can be slow with external HDDs. Took several hours and I had to have faith that it was still working when it showed the same progress screen with no movement for an hour or so at a time. Probably would've been faster had I used an external SSD but saw no reason to spend the money on one for just this occasion.
 
Are there any other ways to do migration assistant besides TM?
 
Doesn’t iCloud cover most of the stuff you need to migrate over?

I like to keep my new computers fresh and just copy the files I want over via an external hard drive. I don’t like to copy all of my settings and accumulated crap from the old computer via time machine. That’s just me though not a big fan of time machine anyway.
 
Are there any other ways to do migration assistant besides TM?

I use a Carbon Copy clone when moving to a new machine. I installed Catalina on the internal 256gb SSD of my 2012 quad-core Mini Server recently, just to check it out (normally I boot that machine from an external 1tb SSD with Sierra). For testing purposes, a couple days ago I used Migration Assistant with a Carbon Copy clone of my 2013 MacBook Air that is running Sierra. The clone was on a 500gb external Samsung T3 USB 3.0 SSD and I was surprised by how fast the process went.

From what I've seen so far, there are no problems - other than the fact that my old 32-bit applications no longer work, which was expected. I prefer using a clone (prefereably on a bootable SSD) so that I can always go back to the old operating system if needed. And if you have 32-bit software that you might need again, that will permit you to still use it by booting from the external SSD.
 
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