Pi running DietPi3, a minimal Linux distro, that you can just power off

[Malcolm_Percival (Malcolm)]

Showing (off) your Roon setup - description and photos

I’ve had to rewrite the SD cards on my RPis a couple of times following a power loss. Since switching over to DietPi and Roon Bridge, this has not (as yet) been an issue.

Is this a simple case of keeping a copy of the SD card contents somewhere else and re-writing the files? Or do you have to rebuild from scratch. Complete Pi Noob here…