Can't upgrade from Zesty

[dovder]

My laptop currently has Zesty installed. This is the output from cat /etc/*-release:

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=17.04
DISTRIB_CODENAME=zesty
DISTRIB_DESCRIPTION="Ubuntu 17.04"
NAME="Ubuntu"
VERSION="17.04 (Zesty Zapus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 17.04"
VERSION_ID="17.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=zesty
UBUNTU_CODENAME=zesty

Because this is now EOL, I can't update packages or anything. It's upgrade or nothing. I'm trying to follow the instructions here.

First of all I have to check sources.list (I believe this means /etc/apt/sources.list) to see it mentions zesty. So far so good, my sources.list looks like this:

#deb cdrom:[Kubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412)]/ zesty main multiverse restricted universe

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://gb.archive.ubuntu.com/ubuntu/ zesty main restricted
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://gb.archive.ubuntu.com/ubuntu/ zesty-updates main restricted
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://gb.archive.ubuntu.com/ubuntu/ zesty universe
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty universe
deb http://gb.archive.ubuntu.com/ubuntu/ zesty-updates universe
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://gb.archive.ubuntu.com/ubuntu/ zesty multiverse
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty multiverse
deb http://gb.archive.ubuntu.com/ubuntu/ zesty-updates multiverse
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://gb.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse
# deb-src http://gb.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu zesty partner
# deb-src http://archive.canonical.com/ubuntu zesty partner

deb http://security.ubuntu.com/ubuntu zesty-security main restricted
# deb-src http://security.ubuntu.com/ubuntu zesty-security main restricted
deb http://security.ubuntu.com/ubuntu zesty-security universe
# deb-src http://security.ubuntu.com/ubuntu zesty-security universe
deb http://security.ubuntu.com/ubuntu zesty-security multiverse
# deb-src http://security.ubuntu.com/ubuntu zesty-security multiverse

So I didn't make any changes to the file. Okay, next, install a couple of packages:

sudo aptitude install update-manager-core update-manager

When I run this, it tells me it doesn't know what aptitude is. Okay, fine, I normally use apt-get anyway, so I run this:

sudo apt-get install update-manager-core update-manager

This fails with what looks like a bunch of 404s from the repository URLs, for example:

E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/....179_amd64.deb 404 Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/...7.04.8_all.deb 404 Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/....04.10_all.deb 404 Not Found [IP: 91.189.88.149 80]

I'm kind of puzzled about this. Can anyone advise me what I should be doing?

[Snowhog]

See EOLUpgrades: https://help.ubuntu.com/community/EOLUpgrades

You will HAVE to upgrade to a newer release of Kubuntu; you have no choice.

[jglen490]

Pick a version, preferably 16.04 or 18.04, and do a clean install. Back up your /home files first.

[dovder]

Thanks for your responses, Snowhog and jglen.

See EOLUpgrades: https://help.ubuntu.com/community/EOLUpgrades

You will HAVE to upgrade to a newer release of Kubuntu; you have no choice.

I want to upgrade! That's what I'm trying to do. Am I reading the wrong documentation?

Pick a version, preferably 16.04 or 18.04, and do a clean install. Back up your /home files first.

Ah, so you're saying there's no route to upgrade from within Kubuntu itself, right?

[claydoh]

You can't do it in steps, as normally would happen (17.04-1710-1804), as both 17.04 and 17.10 are EOL. I think it would be less harrowing, simpler, and much quicker to do a fresh install. I say this as a harcore upgrasde-only guy.

Personally, I would attempt to perform the manual upgrade using the instructions given, that you are looking at, but I also can get myself out of any jams fairly easily, so the process is not so scary sounding to me, and would be a learning experience (ie something fun to try). But it *will* be very likely that there will be problems, so it is probably best to save your docs and files, and start from scratch.

[woodsmoke]

I did it in Neon.

woodsmoke