I have done both upgrades, but not as "upgrades" per se. My experience is that 
it is least troublesome to backup your data (twice), backup /etc, note any 
customizations, wipe the HDD, and reinstall from scratch. Both Mint 18 and 19 
run fine on my desktops afterwards. Unless you have TBs of data this will 
probably be the least troublesome route. 

I run the following commands before backing up /home and /etc: 
dpkg --get-selections > /home/wgking/mint/Package.list
apt-key exportall > /home/wgking/mint/Repo.keys
crontab -u wgking -l > /home/wgking/mint/crontab.backup

After restoring data you can check the package list of the new version against 
the old package list and reinstall any that you still want. This works well if 
you do not do any installs from source. You will have to manually reinstall 
repos and cron scripts.

Good luck!

Greg
----- Original Message -----
From: "caziz" <[email protected]>
To: "[email protected] [email protected]" <[email protected]>, "public Calgary 
UNIX talk" <[email protected]>
Sent: Monday, July 1, 2019 10:04:18 AM
Subject: [CalgaryUNIX] update to current Mint LTS

Hi Guys,

   Mint 17.3 Rosa LTS timed out in April.

   I want to upgrade to Mint 18  (good to 2021)

   and then Mint 19 (good to 2023).


Anybody have experience or suggestions?

I've previously done this with Ubuntu and few problems.
Ubuntu proved an update script to dumb it up.

This will be my first Mint major version upgrade.

Thanks,
Chris


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