It sounds as if your weewx/solar Pi installation was one or (probably) two
versions behind the current ('Bullseye') version of the Pi's Debian-based
OS. While it may be possible to upgrade the OS 'around' the existing
installed programs, it would take a lot more Linux knowledge than I am
guessing you have, and would not be guaranteed to work - either in the
short or in the long term. The right solution (in addition to implementing
a better backup strategy, going forward!) is almost certainly to be to
install the latest version of the OS on a new SD Card, reinstall weewx and
your solar monitoring program, and migrate your data.
weewx is easy! All the data is stored in its database - presumably
weewx.sdb, in your case.
The solar monitoring program is obviously the issue. I assume that you
didn't write it yourself, or you would know where it stores its data. Where
did you get it? How did you originally install it? Was/is there no
documentation? I assume that you know what it is called - I would try doing
a Google search for '[program name] data location', and/or '[program name]
migrate data'. In any event, unless this produces an easy answer, your best
bet for knowledgeable further help is likely to be The Raspberry PI User
forums <https://forums.raspberrypi.com/>.
On Tuesday, August 23, 2022 at 6:16:36 AM UTC-4 Greg Troxel wrote:
>
> Alastair L <ajan...@gmail.com> writes:
>
> > Apologies in advance for this off topic question, but I'm sure someone
> out
> > there has had a similar issue and solved it.
>
> It is but many struggle with RPIs.
>
> My advice is
>
> 0) Ask this in RPI-land instead.
> 1) first image the card you have, saving it
> 2) figure out and implement a backup strategy for your data
> 3) get another card, and do an install
> 4) mount it someplace and look at the files in the boot partition and
> see which is different from the card that was in the machine that
> broke. It is possible that your old system hasn't gotten the new
> packages.
> 5) think about using other small computers that are less pesky than the
> RPI. I like the PC engines apu2 series, but last I checked they too
> were having supply chain issues.
>
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