Hello Martin,

> Then download a recent Noobs distribution from the RaspberryPi
> Foundation
> http://www.raspberrypi.org/
> Use noobs to set up a new installation on a new 4GB or 8GB SD card, and
> then put the stuff you saved back in place.

Use NOOBs only to try out and find out your most conevenient OS,
but NOT for production use.
Use Raspbian or Ubuntu if you want Linux, but NOT noobs,
as it is unreliable and incomplete compared to native Raspbian, Ubuntu,
or RISC OS.

> Finally, work out a schedule that suits you for making backups and doing
> regular software upgrades and do it. Mine gets a weekly backup followed
> immediately by a software upgrade.

I am building every year a complete new fresh setup.
Mostly after the 14th of March.
This year I look for de Pi 4B and the most recent OS that works on all the Pi
machines, old and new ones ;-).
Then you can insert every (micro-)SDcard in every machine.

Henri.

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