Hi Is there a way to upgrade the existing xubuntu LTS 20.04 installation to LTS 22.04 from CD? I have multiple installations, and don't want to repeatedly download the new version.
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1You can re-install as a *quick* means of *release-upgrade*, which is non-destructive & will auto-re-install the *manually installed* packages (if the packages are from Ubuntu repositories in the new release), but that isn't exactly what you are after, and isn't QA-tested to work with any 3rd party packages you have installed. – guiverc Jan 20 '23 at 12:50
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1Edited: Deleted email address. This is the wrong place to solicit help via email. – user535733 Jan 20 '23 at 15:42
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Does this answer your question? [How to upgrade Ubuntu from an ISO image](https://askubuntu.com/questions/39105/how-to-upgrade-ubuntu-from-an-iso-image) – karel Jan 27 '23 at 09:43
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add the CD path to software & update other software by adding the details for the CD. then you should be able to update via CD. my entry is ...
cdrom:[Xubuntu 22.04.1 LTS jammy jellyfish -release amd64 (20220809.1)]
tick the box and reload the software updater then use it to check for updates and it will load the updates from the CD ...
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There It just says insert CD. Doesn't allow me to enter the path. On inserting CD also, nothing happens. – Ram Sonney Jan 22 '23 at 03:01
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Its not showing tick box even after entering the path of the cdrom using sudo apt-cdrom – Ram Sonney Jan 26 '23 at 04:28