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I have ubuntu 20.10 and try to upgrade. I do

 sudo apt-get upgrade

but get an error

E: Il repository "http://it.archive.ubuntu.com/ubuntu groovy Release" non ha più un file Release.
N: L'aggiornamento da tale repository non può essere eseguito in modo sicuro ed è quindi disabilitato come impostazione predefinita.
N: Consultare la pagina man apt-secure(8) per la creazione di un repository e la configurazione utente.
E: Il repository "http://it.archive.ubuntu.com/ubuntu groovy-updates Release" non ha più un file Release.
N: L'aggiornamento da tale repository non può essere eseguito in modo sicuro ed è quindi disabilitato come impostazione predefinita.
N: Consultare la pagina man apt-secure(8) per la creazione di un repository e la configurazione utente.
E: Il repository "http://it.archive.ubuntu.com/ubuntu groovy-backports Release" non ha più un file Release.
N: L'aggiornamento da tale repository non può essere eseguito in modo sicuro ed è quindi disabilitato come impostazione predefinita.
N: Consultare la pagina man apt-secure(8) per la creazione di un repository e la configurazione utente.
E: Il repository "http://it.archive.ubuntu.com/ubuntu groovy-security Release" non ha un file Release.
N: L'aggiornamento da tale repository non può essere eseguito in modo sicuro ed è quindi disabilitato come impostazione predefinita.
N: Consultare la pagina man apt-secure(8) per la creazione di un repository e la configurazione utente.

which, in english sounds as

repository "http://it.archive.ubuntu.com/ubuntu groovy Release" no longer has a Release file.
...

How can I update/updgrade my system?

user126154
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    groovy is 20.10 and it reached EOL on July 22 2021 – Raffa Jul 06 '22 at 11:12
  • Ubuntu 20.10 (along with all flavors) is End-of-Life and thus unsupported on this site (https://askubuntu.com/help/on-topic), and many other Ubuntu sites, unless your question is specific to moving to a supported release of Ubuntu. https://fridge.ubuntu.com/2021/07/25/ubuntu-20-10-groovy-gorilla-end-of-life-reached-on-july-22-2021/ https://help.ubuntu.com/community/EOLUpgrades – guiverc Jul 06 '22 at 11:13
  • @Raffa thanks, changed in the question – user126154 Jul 06 '22 at 11:15
  • The problem is that I cannot upgrade because first I need to update – user126154 Jul 06 '22 at 11:16
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    Please see: How upgrade Ubuntu 20.10 after its EOL? – Raffa Jul 06 '22 at 11:22
  • You can fresh install Ubuntu 22.04 instead of upgrading so many times. It is an LTS release, and you can continue using it till 2027 without upgrading. – Archisman Panigrahi Jul 06 '22 at 11:59
  • If it's a desktop system, you can re-install without losing any data files, and having manually installed packages (from Ubuntu repositories) auto-reinstalled (if available in the new release) automatically. The lack of format triggers this type of install; available with calamares or ubiquity installer ISOs of Ubuntu. As system directories are wiped; server apps (which can store conf files in those directories) aren't catered for (desktop apps store configs in $HOME which isn't touched unless you format). – guiverc Jul 06 '22 at 12:53
  • @guiverc how can I do that? – user126154 Jul 06 '22 at 13:11
  • @Raffa the question you linked about EOL worked – user126154 Jul 06 '22 at 13:12
  • Now I'm upgrading to 21.04 -> 21.10 -> 22.04 but yes, if I coud do a fresh install in the way @guiverc says I'll be happier: how can I do that? (Is there any question answering that could be linked here?) – user126154 Jul 06 '22 at 13:13
  • Re-install allows you to go forward/backwards though of course there can be complications compared to a release-upgrade, but it's my fall back if I have problems with a release-upgrade, or I just lack the time/energy to release-upgrade as re-install is so quick. The lack of format triggers the upgrade via re-install (or "install using existing partition" as per Lubuntu testcase). I document it here though that's intended for QA-testers not end-users.. I've written about it here (20+ times) too – guiverc Jul 06 '22 at 13:34

1 Answers1

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I found that How upgrade Ubuntu 20.10 after its EOL? solved my first problem.

I found useful also the comment of guiverc about re-istalling without losing the "history" of packages installed. Basically by chosing from isntalling media via the option that don't format partitions. here the link from guiverc comment.

user126154
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