Gina

I thought running sudo apt-get update and sudo apt-get upgrade would upgrade to the latest version but this time it didn't.

Thanks James.  Guess I could choose option 3. 

Alternatively, perhaps setup a dual boot system with a choice of both old and new.

Rebooted but it still seems to be running the old version. 

Have now run sudo apt-get update and sudo apt-get upgrade and let it upgrade Linux Mint to the latest version.  Just wants a restart to run it.  Just need the nerve!!

Downloaded Rescuezilla and wrote it to a USB stick with balenaEtcher, booted into that and used it to backup the /dev/sda2 partition image.  Took 98m.

Very easy and straightforward.

This is the partition structure on my system SSD.

/dev/sda2 contains the OS and lots of data files.  Not the best allocation methinks.  A 450.31 GiB image is going to take a lot of space and a long time to back up.  Better do it once then move some of the data off elsewhere and shrink the partition.  Of course, with hindsight it would be different!!!

Thanks Fabien.   I'll have a look at RescueZilla.  Was going to try CloneZilla but the instructions look a little strange.

BTW.  I see I need to update my signature - things have progressed.  I look a fair bit older than my avatar too!!!

When I get that problem I type into an editor and copy.  Then if post lost I can just paste rather than retyping the lot.

Found this :-

https://www.maketecheasier.com/back-up-entire-hard-drive-linux/

Most of this I know of but section 4. TAR looks like a much simpler way than using a Live Linux USB stick.  It looks too good to be true.  Anyone done this?  Or any other comments.

What about the problem of changing the system drive when using it?  

Have tested booting main PC from USB stick so I can use that to make an image backup of my system drive onto a USB external drive before running an upgrade.

I've used dd in the past and other tools.  Of course, to copy the system drive I shall need to boot from a Live Linux system, either CD or USB stick.

Any recommendations?

Think I should backup the home SSD image before upgrading the version.  Must look up how to do that.

Yes,Mint is a "fork" of Ubuntu which is based on Debian.

Pretty sure I have the previous installer.

Downloaded and installed the latest version of PixInsight following the instructions and it seemed to go fine but when I choose PixInsight from the Graphics menu nothing happens!  I suspect I may need to upgrade my version of Linux Mint.

This is how I proceeded :-

1. Logged into my PI account and downloaded the new version.
2. Created folder pi-install2 in Home and copied downloaded file into it. 
3. Followed instructions on the PI web site for installation, changing downloaded filename to right one.  All went smoothly with removal of old version included.

Screenshot of installation process.

Checked the PixInsight System Requirements.

I noticed this :-

Quote

PixInsight 1.8.8-8 for Linux requires a 64-bit Linux distribution with glibc version 2.27 (January 2018) or later and GLIBCXX_3.4.29 / CXXABI_1.3.12 (GCC 9.3.0 or later).

I think my version is probably pre-2018:-
.

Do I need to upgrade my Linux version?   Do other things look adequate?

Any other comments?

I'm fine thank you.

Cord control system for east window.  Window opens and closes with the roof.

I did check the swap when I was having the problem and none was in use.  Other system functions too.  I always check such things if I get any problem.

It works over SSH.

No I don't have a temperature sensor in the box.  Not sure just where I'd out it.

I have a triple imaging rig with 3 RPi boards and using wired LAN to the house.  Indoors the rig is controlled by KStars/Ekos running in Linux Mint on my tower system.

All was working fine a few nights ago but then on a later night I kept getting "Broken pipe" errors and network disconnection. This wasn't all at once but one system at a time with a few minutes in between.

LAN consists of router plus one network switch indoors and a second network switch on the rig.  Both Netgear 5 port units.  I also have a WiFi LAN if that's relevant.

On the rig are 2 RPi 3B boards running Raspian and indiserver with drivers plus an RPi 4B running Astroberry Server.  The first RPi 3B controls the EQ8 mount and has 2 CMOS cameras, ASI 1600MM-Cool for imaging and ASI 178MM for guiding.  The other RPi boards run imaging only.  Except that I also have remote focus for the imaging cameras using the Astroberry Focuser driver.  The remote systems run servers and the Mint machine runs 3 instances of KStars/Ekos as clients, controlling everything via 3 individual SSH channels.

Cable to obsy is CAT6 outdoors rated cable allowing gigabit data rate.

Nothing has changed between the night the kit worked and later when it lost networking.  The only thing I can think of is that it got warmer.  I have fan cooling through the box with the 3 RPi boards and HATs.  The main obsy power of 13.8v feeds the rig with a 12/24v to 5v 10A voltage dropper/regulator feeding the RPi boards.   1000µF electrolytic and 0.1µF ceramic capacitors are connected across the incoming power connector.

Any thoughts on what could have gone wrong and/or what I can do to fix it would be much appreciated.  Lots of clear night skies and kit problems!!!  Frustration unlimited!!

SUCCESS!!  I now have Astroberry Server working on my RPi 4B and my new 294 camera working,  I have my triple imaging rig on the floor for easy connection to RPi.  Connected to Astroberry Server running on RPi 4B with ASI 294MM-Pro camera connected to a USB3 port.  This is with KStars/Ekos running on my Linux Mint tower and using SSD to connect to Astroberry Server on the RPi 4B.  Many many thanks to @RadekK and others who have helped.

In the past I have used KStars/Ekos on my Linux Mint tower machine and just indiserver and the INDI drivers on the RPi.  Connecting over Ethernet and accessing via SSH to each RPi card (multiple imaging rig) using separate instances of KStars/Ekos for each imaging camera.  Can I work in a similar way  with the RPi4B running Astroberry Server as control for my ASI294MM-Pro camera and mount, Astroberry Focuser, etc. with 2 other RPi boards for my other cameras (triple rig) or is there a better way?

Tried accessing Astroberry Server from Firefox and it worked.  Connected over Ethernet.

Yes, just done that and now have a mountable rootfs.

Tried in RPi 4B with HDMI to monitor but gets so far and stops.  Showed RPi banner for a while but wouldn't respond to kb or mouse.