clean install: you make a backup, nuke the computer, install a fresh upgraded copy of the distro you want from a live usb, copy your data again to the computer.
upgrade: you wait 'till the distro' developers release an upgrade you can directly install from your soon to be old distro, you use a command like sudo do-release-upgrade
and why do you upgrade like that?
I follow the official upgrade method. Can’t be bothered to mess around with anything more complicated than that. Besides, the devs probably understand the system better than I do, so there has to be a reason why that is the preferred way.
This is my plan A. I'll only go to plan B if something goes wrong — which has happened to me a couple times. I tried to upgrade Ubuntu (LTS, I forget which version) years ago, but it failed hard. I still don't know why. It wasn't something I could figure out in half an hour, and it wasn't worth investing more time than that.
Come to think of it, it's possible all my upgrade woes came down to Nvidia drivers. It was a common problem on Suse (TW), to the point where I pinned my kernel version to avoid the frequent headaches. I'll try a rolling distro again when I switch to AMD, maybe.
Neither. I use a rolling release distro.
But if I have to use release based distros, I probably would clean install.
A rolling release distro is basically a requirement for me. I abhor major release upgrades. They're usually labor intensive and often break things.
Upgrade. It works perfectly fine and when it doesn’t figuring out what’s going on learns me something and several times has resulted in fix commits to the packages.
E: there’s some people saying they do clean installs on Ubuntu. They’re right that ubuntu breaks shit all the time but I’ve solved that by simply not using the bad distros.
It's not a clean install if you're backing shit up!
Also, I just map my home directories to my NAS so I don't have to worry about backups.
I feel like that may be true nowadays, but I remember back when I used to use ubuntu that the upgrade from 16.04 to 18.04 was pretty bad. Fedora has always worked great for me, but these days I only use rolling release distros in which case there aren't any major version updates in the first place, so the problem largely doesn't exist in the same context.
I always upgrade as I can't deal with a clean install every so often. This warrants using a distro that does handle this well, though*. Which, thankfully, isn't a big deal as most distros support this anyways.
I almost always prefer clean installation when possible, while making sure to backup important content from highly accessed folders like Desktop, Downloads and Documents (on Windows), for example.
Upgrade. Don't wanna mess with restoring/preserving data and configs.
Wait for a bugfix release after a major release. Then upgrade.
need moar bugs fixed, just to be safe
Depends on the distro.
On my personal laptop with openSUSE, I have plenty confidence doing all kinds of upgrades and sidegrades (between Leap and Tumbleweed).
The package manager detects conflicts and makes me decide what to do with them. I've never seen the software or distro dependency definitions fuck up, it was always me making a wrong decision.
Well, and if I do make a wrong decision or anything else should go wrong during the upgrade, I can roll back to the BTRFS snapshot before.On my work laptop, the best I can get is Kubuntu. Apt is much more fickle, since it doesn't have as clear of a concept of what constitutes a conflict, but also what a correct system should look like.
The whole packages feel much more fickle, too, because they've got all these custom patches, so you really don't want to accidentally mix different versions of packages, like might happen in an incomplete upgrade.
And of course, you get one chance at upgrading. If anything goes sideways, you better have your Live USB ready right away.So, that's why I would prefer to install fresh right away. Of course, my workplace doesn't actually allow me to do that either. They really like to keep me on edge.
I've got a desktop that got a dirty install of KDE Neon when the repositories first got put up (before there were isos). Been in-place upgrading it ever since.
