I have an old Dell E5250 that originally ran Lubuntu, and which I later moved over to a full install of Ubuntu, and it's been absolutely fine for what I've used it for, basically for taking up to the library to use their wifi when our ISP has buggered our fibre configuration, and to use the library's copy of Ancestry - the library lets you log in to Ancestry from your own machine as long as you're on their wifi network and signed in to the library management system.
Like many of the Lenovo machines quite a few of the professional grade Dell machines are certified for use with Ubuntu, albeit in the case of the E5250 quite an old version. This means that there's usually no problem as regards low level device drivers,
However, I've never actually upgraded it to the latest release of Ubuntu - sure I've done periodic software updates, but never a release upgrade, and now was probably the time to do it.
The machine is a little tight as regards memory for the current release of Ubuntu, and under normal circumstances I might have moved it over to Xubuntu, but I decided I'd try doing a do-release-upgrade, after all if it broke, I have my Xubuntu install USB stick ready.
I've had mixed experiences with command line upgrades in the past, but, hey, nothing ventured, nothing gained.
I ran an apt-get update and an apt-get upgrade first to make sure everything was up to date, and rebooted the machine before running the release upgrade command. (All the upgrade command of course need to be run as sudo)
Basically, it just worked. Took about an hour, and unlike the iMac, where a couple of things broke, this time everything seemed fine, and all my data was still where I expected it to be.




