Recommended: (by me as well). Use the free version of SuperDuper to make a full bootable boot disk clone. It's on my "it's raining out" to-do list for the day.

It takes a long time compared to incremental backups, but runs unattended.

Just do it. If there's a disaster, you're covered, and can read the SuperDuper or the Apple disk recovery options at that time. For non-personal use, read them now and write up an InfoDoc.

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