Don’t just throw it in a box and send it off: what happens if its internal storage is replaced or wiped? What about protecting sensitive files? Does a T2 chip make this difficult?
Time Machine
More work to be done before your migration is fully complete: check your workflows, key security settings, disk health, licensing, backups.
The simplest and best way, when it works. But have you considered migrating from a Time Machine backup instead, and what if it doesn’t work when setting up?
Should you leave the Migration Assistant to set your new Mac up? Will it work if the Mac has a T2? What are your options?
Migration is pain: you can spread it out over days or weeks, or get it over with in a much shorter period. Moving your Time Machine backups also requires great care.
Adds support for local snapshot statistics, Dark Mode, fixes a bug, and is now notarized for your added security.
Detailed comparison of how Time Machine backs up HFS+ and APFS volumes, including its use of local snapshots, with diagrams.
With its 2 TB Fusion Drive well over half full, upgrading my iMac from Sierra to Mojave could so easily have been a nightmare.
If you’ve upgraded to Mojave, there are a couple of odd things you may have noticed in SystHist and T2M2. Help is at hand.
When Time Machine backs up an APFS volume, it works quite differently from the way it did on HFS+. Explored here using log entries from Mojave.
The Eclectic Light Company 