[ojhughes]

> I just let the migration assistant do the needful

but will it revert back if things go wrong?

[bombcar]

It leaves the "source computer" alone, so if it blows up you can always just start again.

I never trade in my old computer, even if I'm going to sell or get rid of it (donate) I keep it around for a month or so to make sure everything's working.

[phinnaeus]

It reverts back and it does it at its earliest.

[timothevs]

Dear, this was gold.